Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
cua triet » cua viet, su triet, va triet
thanh ve » thanh va, thanh van, thanh ha
qua cac » cua cac
cac tuc » cac toc, cac tu, cac tac
sach ky » sac ky, sach y, sach ty
hanh ve » hanh vi, hanh va, hanh kem
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
so sach » so sanh, bo sach, co sach
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: so sach ky tang xa hoi. hieu qua cac tuc va ((((thanh ve) OR (hanh ve))) or (thanh vien)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky tang xa hoi. hieu qua cac tuc va ((((thanh ve) OR (hanh ve))) OR (thanh vien)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky tang xa hoi. hieu qua cac tuc va ((((thanh ve) OR (hanh ve))) or (thanh vien)) cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky tang xa hoi. hieu qua cac tuc va ((((thanh ve) OR (hanh ve))) or (thanh vien)) cua triet*.