Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vu khach » vu khanh, vu khac, vay khach
danh bai » anh bai, danh bat, dang bai
hieu va » lieu va, hieu qua
bai cua » ban cua, dai cua, bai ca
va danh » va dinh, va dan, va hanh
cac tuc » cac toc, cac tu, cac tac
su sach » so sach, vu sach
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, tuc xa

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 (vu khach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cac tuc va danh bai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cac tuc va danh bai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu khach)) ky nang xa hoi. ((hieu ve) OR (hieu va)) cac tuc va danh bai cua triet*".