Perhaps you should try some spelling variations:
san doanh » van doanh, toan doanh, vay doanh
thu sach » tu sach, thuat sach, thuoc sach
cham cuc » cham cuu, pham cuc, pham chuc
cuc san » cac san, cua san, cuu san
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ky lang) or (ky tang)) xa hoi. hieu ve cham cuc san doanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky lang) OR (ky tang)) xa hoi. hieu ve cham cuc san doanh ((vi cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky lang) or (ky tang)) xa hoi. hieu ve cham cuc san doanh ((vi cua) or (di cua)) tre*.