Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
lam dung » lam dong, lan dung, am dung
nam duoc » nam thuoc, da duoc, dat duoc
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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