Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
su triet » su viet, su tien, ve triet
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
ky lang » ky nang, ky dang, tay lang
cac xuc » cam xuc, cac nuoc, chat xuc
ve cac » va cac, vien cac
xuc va » duc va, tuc va, luc va

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 ((ky lang) or (ky tang)) xa hoi. hieu ve cac xuc va hanh vai ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky lang) OR (ky tang)) xa hoi. hieu ve cac xuc va hanh vai ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky lang) or (ky tang)) xa hoi. hieu ve cac xuc va hanh vai ((cua triet) or (su triet))*.