Perhaps you should try some spelling variations:
thien van » thi van
lam duoc » nam duoc, luat duoc, lam thuoc
van hanh » van thanh, ban hanh, van anh
duoc van » duoc va, duc van, duoc ban
hai cua » thai cua, dai cua, hoi cua
lai cua » dai cua, lai chau, thai cua
sach ly » sach y, sach lo, sach hay
hang xa » hoang xa, hang va, hang ca
sach ty » sach y, sach tu, sach thu
van lam » van nam

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 ly) OR (sach ty)) hang xa hoi. thien van lam duoc van hanh ((lai cua) or (hai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ly) OR (sach ty)) hang xa hoi. thien van lam duoc van hanh ((lai cua) OR (hai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ly) OR (sach ty)) hang xa hoi. thien van lam duoc van hanh ((lai cua) or (hai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach ly) OR (sach ty)) hang xa hoi. thien van lam duoc van hanh ((lai cua) or (hai cua)) triet*.