Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
chua duoc » chua nuoc, cua duoc, chuan quoc
lang van » dang van, tang van, hoang van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
duoc va » nuoc va, duc va, duoc ma
su sach » so sach, vu sach
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
vi cau » va cau, ve cau, di cau

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) or (lang van)) hoi. ((hieu ve) or (hieu va)) chua duoc va hanh vi cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang xa) OR (lang van)) hoi. ((hieu ve) OR (hieu va)) chua duoc va hanh vi cau triet.
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang xa) or (lang van)) hoi. ((hieu ve) or (hieu va)) chua duoc va hanh vi cau triet*.