Perhaps you should try some spelling variations:
thanh vien » nhan vien
thanh van » thanh san, thanh toan, thanh phan
dieu cua » dieu tra
cua tre » cua te, cua triet, dua tren
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
cac tuc » cac toc, cac tu, cac tac
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cuu tre » cau tren, cau treo
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 lang xa hoi. dieu cua cac tuc va ((thanh van) or (thanh vien)) ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky lang xa hoi. dieu cua cac tuc va ((thanh van) OR (thanh vien)) ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky lang xa hoi. dieu cua cac tuc va ((thanh van) or (thanh vien)) ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: so sach ky lang xa hoi. dieu cua cac tuc va ((thanh van) or (thanh vien)) ((cua tre) OR (cuu tre))*.