Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
hieu van » hieu va, lieu va, hieu ve
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ly nang x ho. ((hieu van) or (thien van)) cam luc va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang x ho. ((hieu van) OR (thien van)) cam luc va hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang x ho. ((hieu van) or (thien van)) cam luc va hanh vai cua triet*.