Perhaps you should try some spelling variations:
trung van » truong van, trung va, trung tuan
trong van » trong cac
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
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 ve) or (hieu va)) cau ((trung van) OR (trong van)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. ((hieu ve) OR (hieu va)) cau ((trung van) OR (trong van)) hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. ((hieu ve) or (hieu va)) cau ((trung van) OR (trong van)) hanh vi cua triet*".