Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
cam luc » cam xuc, cau luc
va hanh » van hanh, va thanh, va danh
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua

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) or (thu sach)) ky nang xa hoi. ((hieu quan) or (hieu qua)) cam luc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky nang xa hoi. ((hieu quan) OR (hieu qua)) cam luc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky nang xa hoi. ((hieu quan) or (hieu qua)) cam luc va hanh vi cua triet*.