Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
tan thanh » tran thanh, tang thanh, toan thanh
cua triet » cua viet, va triet
hieu van » hieu va, thien van, lieu va
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van lam » van nam
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. hieu van lam duc tan thanh van ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu van lam duc tan thanh van ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van lam duc tan thanh van ((cua triet) OR (su triet))*.