Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi trieu » dong trieu, doi chieu, doi trinh
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
nhan tai » van tai, toan tai
hang tai » hang va, dung tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi trieu tinh - ((hanh mang) OR (hanh trinh)) cua dung cong dan ((nhan tai) OR (hang tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi trieu tinh - ((hanh mang) or (hanh trinh)) cua dung cong dan ((nhan tai) OR (hang tai))~".
• Adding a wildcard symbol may retrieve word variants: doi trieu tinh - ((hanh mang) or (hanh trinh)) cua dung cong dan ((nhan tai) OR (hang tai))*.