Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cam tuc » cam tu, nam thuc, dam thuc
cua cau » cua cac, cua chu, cua cay
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu van ((cam tuc) OR (cam xuc)) va thanh tai ((cua te) or (cua cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu van ((cam tuc) OR (cam xuc)) va thanh tai ((cua te) OR (cua cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu van ((cam tuc) OR (cam xuc)) va thanh tai ((cua te) or (cua cau))".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu van ((cam tuc) OR (cam xuc)) va thanh tai ((cua te) or (cua cau))*.