Perhaps you should try some spelling variations:
va doanh » van doanh, vay doanh, va danh
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
cua cua » cua chua, qua cua, cua cha
tuc va » thuc va, truc va, tuc xa
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ly nang ((le hoi) or (ma hoa)). hieu va cac tuc va doanh ((cua cua) or (ca cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang ((le hoi) OR (ma hoa)). hieu va cac tuc va doanh ((cua cua) OR (ca cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ly nang ((le hoi) or (ma hoa)). hieu va cac tuc va doanh ((cua cua) or (ca cua)) tre*.