Perhaps you should try some spelling variations:
thien van » thi van
ly quang » le quang, vu quang
quang xa » quan xa, quang ma, quang va
lam duoc » luat duoc, lam thuoc, tao duoc
nam duoc » nam thuoc, da duoc, dat duoc
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
lai va » loai va, mai va, dai va

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 quang xa hoi. thien van ((lam duoc) or (nam duoc)) van hanh lai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly quang xa hoi. thien van ((lam duoc) OR (nam duoc)) van hanh lai va triet.
• Adding a wildcard symbol may retrieve word variants: su sach ly quang xa hoi. thien van ((lam duoc) or (nam duoc)) van hanh lai va triet*.