Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
doanh van » doan van, doanh va, doanh ban
doanh dan » doanh ban, doanh dao, doanh doanh
hien cam » hien cac, hien cau, hien giam
tang ma » mang may, tang van
sach ky » sac ky, sach y, sach ty
sach tu » sach thu, cach tu, sach ty
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach tu)) tang ma hoi. dieu hien cam xuc va ((doanh dan) OR (doanh van)) cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) or (sach tu)) tang ma hoi. dieu hien cam xuc va ((doanh dan) OR (doanh van)) cua tu~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sach tu)) tang ma hoi. dieu hien cam xuc va ((doanh dan) OR (doanh van)) cua tu*.