Perhaps you should try some spelling variations:
te sach » toc sach
thi van » thi lan, thi hanh, thi nang
va dinh » van dinh, va kinh, va tinh
cao duc » dao duc, cao suc, giao duc
sach tu » sach thu, cach tu, sach ty
van cao » van dao, van bao, van hao
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
vi cuu » vinh cuu
vi luu » vi lua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu ((nang xa) or (lang xa)) hoi. thi van cao duc va dinh ((vi cuu) or (vi luu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((nang xa) OR (lang xa)) hoi. thi van cao duc va dinh ((vi cuu) OR (vi luu)) tre.
• Adding a wildcard symbol may retrieve word variants: te sach tu ((nang xa) or (lang xa)) hoi. thi van cao duc va dinh ((vi cuu) or (vi luu)) tre*.