Perhaps you should try some spelling variations:
trung van » truong van, trong van, trung va
cao trung » cao truong, tao trung, bao trung
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
hieu va » lieu va, hieu qua
x hoi » xa hoi, o hoi, x ho
vi ve » va ve, gi ve, ve ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang x hoi. ((hieu ve) or (hieu va)) cao trung van hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. ((hieu ve) OR (hieu va)) cao trung van hanh vi ve triet*.