Perhaps you should try some spelling variations:
doanh tien » doanh tren, doanh vien, doanh chien
khoa hoc » hoa hoc
va doanh » van doanh, vay doanh, va danh
te sach » toc sach
cua tre » cua te, cua triet, dua tren
hieu va » lieu va, hieu qua
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
cuu tre » cau tren, cau treo
sach v » sach va, sach y, sach 2
v lang » va lang, o lang, _ lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach v lang xa hoi. ((hieu ve) or (hieu va)) khoa hoc va doanh tien ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v lang xa hoi. ((hieu ve) OR (hieu va)) khoa hoc va doanh tien ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach v lang xa hoi. ((hieu ve) or (hieu va)) khoa hoc va doanh tien ((cua tre) or (cuu tre))*.