Perhaps you should try some spelling variations:
doanh cua » doanh luan
xa doanh » va doanh, hoa doanh, van doanh
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac nuoc
cac tac » cac toc, cac bac, cac dac
cua cua » cua chua, ca cua, qua cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 y nang ((le hoi) or (ma hoa)). hieu va ((cac tuc) or (cac tac)) xa doanh cua cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((le hoi) OR (ma hoa)). hieu va ((cac tuc) OR (cac tac)) xa doanh cua cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((le hoi) or (ma hoa)). hieu va ((cac tuc) or (cac tac)) xa doanh cua cua tre*.