Perhaps you should try some spelling variations:
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
hang vi » hang va, hanh vi, hang di
luc va » tuc va, loc va
vi cua » vai cua, di cua
cua te » cua tu

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. hieu qua cam ((luc va) OR (duc va)) hang vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((nang xa) OR (lang xa)) hoi. hieu qua cam ((luc va) OR (duc va)) hang vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu ((nang xa) or (lang xa)) hoi. hieu qua cam ((luc va) OR (duc va)) hang vi cua te*".