Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh tuan » trinh quan, trinh toan, trinh luan
doan trung » do trung, dac trung, xuan trung
hoang dung » hoang tung, hoang vuong, thong dung
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
van han » van hanh, van phan, van nhan
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - hanh trinh tuan ((doan trung) or (hoang dung)) van han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - hanh trinh tuan ((doan trung) OR (hoang dung)) van han tap*.