Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
can ban » van ban, toan ban
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
ve cam » ve cham, ve cac, ve cai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu ((ve cam) OR (va cam)) can ban thanh tai ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((ve cam) OR (va cam)) can ban thanh tai ((cua triet) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ((ve cam) OR (va cam)) can ban thanh tai ((cua triet) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((ve cam) OR (va cam)) can ban thanh tai ((cua triet) or (cuu tre))*.