Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
van thanh » ban thanh, van tuan
tu sach » thu sach, su sach, te sach
tai cua » thai cua, tai cuc, tri cua
cam duc » cam xuc, cao duc, pham duc
sach ly » sach y, sach lo, sach ty
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua te » cua tu

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 ly ((nang xa) or (nang ma)) hoi. hieu va ((cam duc) or (giao duc)) van thanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly ((nang xa) OR (nang ma)) hoi. hieu va ((cam duc) OR (giao duc)) van thanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ly ((nang xa) or (nang ma)) hoi. hieu va ((cam duc) or (giao duc)) van thanh tai cua te*.