Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hang » ngan hang
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu va » hieu qua
cam tuc » cam tu, nam thuc, dam thuc
hang vi » hang va, hanh vi, hang di
y nang » ky nang, ly nang, v nang
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 y nang xa hoi. ((hieu va) or (lieu va)) ((cam tuc) OR (cam xuc)) ban hang vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. ((hieu va) OR (lieu va)) ((cam tuc) OR (cam xuc)) ban hang vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. ((hieu va) or (lieu va)) ((cam tuc) OR (cam xuc)) ban hang vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. ((hieu va) or (lieu va)) ((cam tuc) OR (cam xuc)) ban hang vi cua triet*.