Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
hanh hang » thanh hang, hang hang, hanh han
hoc tien » hoc tieng, hoc hien, hoc vien
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc tien) or (hoc thieu)) hach - hanh hang va nhung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc tien) OR (hoc thieu)) hach - hanh hang va nhung cong dan toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc tien) or (hoc thieu)) hach - hanh hang va nhung cong dan toan ban*.