Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
cao duc » dao duc, cao suc, giao duc
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach ty
cam duc » cam xuc, pham duc, nam duoc
cuc te » cua te, cuc thue, cuc tieu

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 (lang xa)) hoi. hieu va ((cam duc) or (cao duc)) ban thanh tai cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly ((nang xa) OR (lang xa)) hoi. hieu va ((cam duc) OR (cao duc)) ban thanh tai cuc te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly ((nang xa) OR (lang xa)) hoi. hieu va ((cam duc) or (cao duc)) ban thanh tai cuc te".
• Adding a wildcard symbol may retrieve word variants: tu sach ly ((nang xa) OR (lang xa)) hoi. hieu va ((cam duc) or (cao duc)) ban thanh tai cuc te*.