Perhaps you should try some spelling variations:
dinh trong » sinh trong, chinh trong, dinh thuong
trong dang » truong dang, trong dan, trong dong
doc hieu » hoc thieu, hoc hien
dang van » hoang van, hang va
van dung » van dong, xay dung, tin dung
dung php » dung phu, dung phan, dung phat
php phan » phap phan, phe phan, phi phan
phan lap » phan dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) sang - dinh trong dang van dung php phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sang - dinh trong dang van dung php phan lap.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) sang - dinh trong dang van dung php phan lap*.