Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach ty
su tien » su kien, su hien, tu tieng
nang o » nang co, nang ho, nang ro
xuc va » tuc va, luc va, xac va
lam su » lai su, lam so, lam vu
o hoc » co hoc, mo hoc, so hoc

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) or (sach tu)) nang o hoc. hieu ve cham ((xuc va) or (duc va)) thanh lam su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach y) OR (sach tu)) nang o hoc. hieu ve cham ((xuc va) OR (duc va)) thanh lam su tien.
• Adding a wildcard symbol may retrieve word variants: vu ((sach y) or (sach tu)) nang o hoc. hieu ve cham ((xuc va) or (duc va)) thanh lam su tien*.