Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
choi thuc » hoc thuc, hoi chuc, cho thue
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: choi thuc hanh - hanh tang luan nhung cong dan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: choi thuc hanh - hanh tang luan nhung cong dan ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: choi thuc hanh - hanh tang luan nhung cong dan ((toan cao) or (toan tap))*.