Perhaps you should try some spelling variations:
luoc van » luoc can, luoc va, luot van
cau theo » cau thi, cau tao
te sach » toc sach
hieu ve » hieu va, hieu van
luc van » luu van, duc van, luc va
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. hieu ve cam ((luc van) or (luoc van)) hanh kem ((cua tre) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ve cam ((luc van) OR (luoc van)) hanh kem ((cua tre) OR (cau theo)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ve cam ((luc van) or (luoc van)) hanh kem ((cua tre) or (cau theo))*.