Perhaps you should try some spelling variations:
va doanh » van doanh, vay doanh, va danh
su sach » so sach, vu sach
via cua » gia cua, gian cua, giau cua
hieu ve » hieu va, hieu van
ty nang » ky nang, ty hang, ly nang
cac co » cac cong
va cua » va chua, ca cua, ma cua
ve cac » va cac, vien cac
co va » co ma, do va, so va

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 ((ty nang) or (ty xang)) xa hoi. hieu ve cac co va doanh ((va cua) or (via cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty xang)) xa hoi. hieu ve cac co va doanh ((va cua) OR (via cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) or (ty xang)) xa hoi. hieu ve cac co va doanh ((va cua) or (via cua)) tre*.