Perhaps you should try some spelling variations:
thuc doanh » thuc hanh, chuc danh, thu oanh
muc doanh » cac doanh, cua doanh, mot doanh
phu thong » pho thong, phap thong, khau thong
sach bai » sach dao, cac bai, sach xa
thuc dan » thuc hanh, hoc dan, thuc vat
khoa phu » khoa phau, khoa thu, hoa phu
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 bai ((((thuc doanh) or (muc doanh))) or (thuc dan)) khoa phu thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach bai ((((thuc doanh) OR (muc doanh))) OR (thuc dan)) khoa phu thong.
• Adding a wildcard symbol may retrieve word variants: vu sach bai ((((thuc doanh) or (muc doanh))) or (thuc dan)) khoa phu thong*.