Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
hieu van » hieu va, thien van, lieu va
va doanh » van doanh, vay doanh, va danh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cam duc » cao duc, pham duc, nam duoc
dan cua » dan ca, ban cua, dai cua
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

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