Line spacing with Latex -

hallo using latex thesis writing. , have facing problem blank line space.. wondering if don't make space in code, saw many spacing while seeing in pdf generated same code.. example, need this

this thesis , finished soon. topic of thesis interesting.

and this,

  thesis   ,      finished soon.     topic of thesis               interesting. 

so please give me idea spaces problem, in code should make changes??

latex forces straight right margin completed lines, space words out achieve that. can tell hyphenate words instead inserting \- hyphenation locations in word want break, e.g. this thesis , finished soon. topic of the\-sis inter\-es\-ting.. can tell little sloppier sloppypar environment: \begin{sloppypar}this thesis , finished soon. topic of thesis interesting.\end{sloppypar}