Perhaps you should try some spelling variations:
cua triet » su triet, va triet
thanh hai » thanh phan, thanh hoa, thanh san
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ban tuc » ban tu, ban tum, ban thuoc
tuc va » thuc va, truc va, tuc xa

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 ban tuc va thanh hai ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van ban tuc va thanh hai ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van ban tuc va thanh hai ((cua triet) or (cua viet))*.