Perhaps you should try some spelling variations:
va doanh » van doanh, vay doanh, va danh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
van cua » vang cua, ban cua, nan cua
dan cua » dan ca, ban cua, dai cua
va cam » va cham, va cac, va cao
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu va cam duc va doanh ((van cua) OR (dan cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu va cam duc va doanh ((van cua) OR (dan cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu va cam duc va doanh ((van cua) OR (dan cua)) tre*.