Perhaps you should try some spelling variations:
thien van » thi van
tan thanh » tran thanh, tang thanh, toan thanh
cua triet » cua viet, su triet, va triet
hieu van » hieu va, lieu va, hieu ve
lam duoc » nam duoc, luat duoc, lam thuoc
duoc tan » duc tan, duoc ban, duoc dan
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
san cua » sang cua, ban cua, dan 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 ky lang xa hoi. ((hieu van) or (thien van)) lam duoc tan thanh san cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. ((hieu van) OR (thien van)) lam duoc tan thanh san cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. ((hieu van) or (thien van)) lam duoc tan thanh san cua triet*.