Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
ve cam » ve cham, ve cac, va cam
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: su sach y ((nang ma) or (nang x)) hoi. hieu ve cam xuc va hanh vai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang ma) OR (nang x)) hoi. hieu ve cam xuc va hanh vai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang ma) or (nang x)) hoi. hieu ve cam xuc va hanh vai ((cua tre) or (cua triet))*.