Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
ban thanh » ban hanh, ban hang
toan cuu » toan cau, toan cua, toan cao
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, tu cach
cac qua » cau qua, tac quan
cam qua » cau qua, cay qua, nam qua
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo

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 (te sach)) ky nang x ho. hieu van ((cam qua) or (cac qua)) ban thanh toan cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang x ho. hieu van ((cam qua) OR (cac qua)) ban thanh toan cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang x ho. hieu van ((cam qua) or (cac qua)) ban thanh toan cuu tre*.