Perhaps you should try some spelling variations:
nghiep thuc » nghiem thuc, nghiem thuoc, nghe thuc
thuat sach » thuat lanh, thuat san
doanh khoa » toan khoa
thuc cong » thuoc cong, thu cong, chuc cong
cong toan » cong tan, cong hoan, cong tuan
thanh van » thanh san, thanh toan, thanh phan
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
thai van » thai vung, thai den, thai son
thi van » thi lan, thi hanh, thi nang
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach hoc tap, nghiep thuc cong toan doanh khoa hoc xa ((thai van) or (thi van)) thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach hoc tap, nghiep thuc cong toan doanh khoa hoc xa ((thai van) OR (thi van)) thanh van.
• Adding a wildcard symbol may retrieve word variants: thuat sach hoc tap, nghiep thuc cong toan doanh khoa hoc xa ((thai van) or (thi van)) thanh van*.