Perhaps you should try some spelling variations:
thanh le » thinh le, thanh ve, thanh de
te sach » toc sach
luu van » cuu van, luan van, luu hanh
luc van » luoc van, duc van, luc va
hieu ve » hieu va, hieu van
vu nang » vuc nang, va nang, vu dang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
v nang » va nang, van nang, voi nang
le cua » ly cua

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 ((v nang) OR (vu nang)) ma hoi. hieu ve cam ((luc van) or (luu van)) thanh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (vu nang)) ma hoi. hieu ve cam ((luc van) OR (luu van)) thanh le cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((v nang) OR (vu nang)) ma hoi. hieu ve cam ((luc van) or (luu van)) thanh le cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) OR (vu nang)) ma hoi. hieu ve cam ((luc van) or (luu van)) thanh le cua tre*.