Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
toc sach » hoc sach, doc sach, thuoc sach
vu nang » vuc nang, va nang, vu dang
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
luc va » duc va, tuc va, loc va
v nang » va nang, van nang, voi nang
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((v nang) OR (vu nang)) xa hoi. hieu ve cam luc va hanh lai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((v nang) OR (vu nang)) xa hoi. hieu ve cam luc va hanh lai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((v nang) OR (vu nang)) xa hoi. hieu ve cam luc va hanh lai ((cua tre) or (cua triet))*".