Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
da duoc » tao duoc, hoa duoc
van cua » vang cua, ban cua, dan cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
thi van » thi lan, thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
lam duc » lam duoc, pham duc, nam duoc

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