Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
cac cuc » cac cuoc, cac cua, cac nuoc
cuc tre » duc tre, cua tre, cuc thue
cuc ban » cua ban, cac ban, cuu ban
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
cao hoc » co hoc, cho hoc, chat hoc
ve cac » va cac, vien cac

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) or (thu sach)) ky nang cao hoc. hieu ve cac cuc ban thanh tai ((cuc tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang cao hoc. hieu ve cac cuc ban thanh tai ((cuc tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang cao hoc. hieu ve cac cuc ban thanh tai ((cuc tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang cao hoc. hieu ve cac cuc ban thanh tai ((cuc tre) OR (cuu tre))*.