Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
van hac » van hoc, van ha, van hai
van cac » van cau, van bac, dan cac
nang xa » nang x, lang xa, nang ma
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 ky nang xa hoi. thien ((van cac) or (van hac)) xuc va hanh lai ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. thien ((van cac) OR (van hac)) xuc va hanh lai ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. thien ((van cac) or (van hac)) xuc va hanh lai ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. thien ((van cac) or (van hac)) xuc va hanh lai ((cua triet) OR (su triet))*.