Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh qua » tranh cua, thanh qua, trinh qua
dung cong » dung trong
hoc dieu » hoc thieu
qua dung » quang dung, su dung, qua song
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc dieu) or (hoc hien)) tinh - hanh tranh qua dung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc hien)) tinh - hanh tranh qua dung cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc hien)) tinh - hanh tranh qua dung cong dan van ban*.