Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thi van » thi lan, thi hanh, thi nang
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va nang » van nang, da nang, cam nang
so sanh » do sanh
van cau » van dau, van hau, van chat
cau tu » dau tu, cau truc
vi cau » ve cau, di cau, viet cau
va cau » va cac, va dau, va cao

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: ((su sach) OR (so sanh)) va nang xa hoi. thi van cau tu va thanh ((vi cau) OR (va cau)) tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) va nang xa hoi. thi van cau tu va thanh ((vi cau) OR (va cau)) tren~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) va nang xa hoi. thi van cau tu va thanh ((vi cau) OR (va cau)) tren*.