Perhaps you should try some spelling variations:
nghiem thuc » nghiem thuoc, nghiep thuc, nhiem thuc
nganh khung » nganh khong, nhanh hung
khung hoc » chung hoc, nhung hoc, thuong hoc
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong coc, cong ho
cong hoa » dong hoa, dong hoc, hang hoa
te sach » toc sach
hoc xa » hoc ma
do ban » doi ban, co ban, do ben
xa do » va do

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach hoc tap, nghiem thuc ((cong hoc) OR (cong hoa)) nganh khung hoc xa do ban thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoc tap, nghiem thuc ((cong hoc) OR (cong hoa)) nganh khung hoc xa do ban thanh van".
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghiem thuc ((cong hoc) OR (cong hoa)) nganh khung hoc xa do ban thanh van*.