Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
hieu van » hieu va, thien van, hieu ve
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
vu sach » vu bach, su sach, vu khach
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
vi va » vi van, vai va, vu va

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) ky nang xa hoi. ((hieu van) OR (lieu va)) cham truc van hanh vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sach)) ky nang xa hoi. ((hieu van) OR (lieu va)) cham truc van hanh vi va triet~".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) ky nang xa hoi. ((hieu van) OR (lieu va)) cham truc van hanh vi va triet*.