Perhaps you should try some spelling variations:
thuc doanh » thuc hanh, thuc dan, chuc danh
doanh khoa » toan khoa
khau thong » khau thuong, khap thong, khau tong
thuc hoach » thu hoach, thuc hanh, chuc hach
hoach toan » hach toan
khoa khau » khoa kham, khoa phau, khoa chau
toan phan » thanh phan, toan ban, hoa phan
phan hong » phan cong, pham hong, phan song
sach tai » sach bai, sach tham, sach xa
tai thuc » thai thuc, tri thuc, dai thuc
thu sach » tu sach, thuat sach, thuoc sach
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
vu sach » vu bach, su sach, vu khach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu sach tai thuc doanh khoa khau thong ) or ( thu sach dao thuc hoach toan phan hong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach tai thuc doanh khoa khau thong ) OR ( thu sach dao thuc hoach toan phan hong )).
• Adding a wildcard symbol may retrieve word variants: (( vu sach tai thuc doanh khoa khau thong ) or ( thu sach dao thuc hoach toan phan hong ))*.