Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
doanh dan » doanh ban, doanh van, doanh dao
thu sach » tu sach, thuat sach, thuoc sach
kho tang » cao tang
hien cam » hien cac, hien cau, hien giam
va doanh » van doanh, vay doanh, va danh
ky tang » ky nang, ky dang, ky trong
dan cua » dan ca, ban cua, dai cua
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
cua cu » cua chu, cua cau, cua su

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: "thu sach ((ky tang) OR (kho tang)) ma hoi. dieu hien cam xuc va doanh dan cua cu~".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky tang) OR (kho tang)) ma hoi. dieu hien cam xuc va doanh dan cua cu*.