Perhaps you should try some spelling variations:
hanh khong » hang khong, xanh khong, khanh phong
phau thong » phap thong, khau thong, phan thong
sach tham » sach nha
tham thuc » nham thuc, pham thuc, tam thuc
chuc danh » chuc nganh, chuc nang, thuc dan
khong he » khong khi, hong ha, khong _
dan chuc » dan thuc, da chuc, don chuc
danh hoa » thanh hoa, khanh hoa, nganh hoa
hoa phau » khoa phau, hoa phan, hoa phat
su sach » so sach, vu sach

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: (( su sach tham thuc hanh khong he thong ) OR ( tu cac dan chuc danh hoa phau thong ))~.
• Adding a wildcard symbol may retrieve word variants: (( su sach tham thuc hanh khong he thong ) or ( tu cac dan chuc danh hoa phau thong ))*.