Perhaps you should try some spelling variations:
lap truong » cac truong, xa truong, tai truong
truong va » truong dai, truong cao, truong dao
vu sach » vu bach, su sach, vu khach
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
va dinh » van dinh, va kinh, va tinh
dinh vi » dinh ve, dinh viet, dinh tri
ve lap » va lap, ke lap
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y ((nang x) or (sang ma)) hoi. hieu ve lap truong va dinh vi va (thiet or thieu)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang x) OR (sang ma)) hoi. hieu ve lap truong va dinh vi va (thiet OR thieu).
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang x) or (sang ma)) hoi. hieu ve lap truong va dinh vi va (thiet or thieu)*.