Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, tu cach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
te sach » toc sach
cac ly » cac ky, cac le, cam ly
ve cac » va cac, vien cac

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