Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh tai » thanh toan, doanh tai, thanh san
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van bac » van ban, van bao, van hac
bac tuc » bac tu, bach tuoc, bac thua
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 bac tuc va ((thanh tai) OR (thanh hai)) ((cua triet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van bac tuc va ((thanh tai) OR (thanh hai)) ((cua triet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu van bac tuc va ((thanh tai) OR (thanh hai)) ((cua triet) or (cua vat))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van bac tuc va ((thanh tai) OR (thanh hai)) ((cua triet) or (cua vat))*.