Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh han » trinh quan
hang dung » hoang dung, dang dung, hang cung
theo cuu » theo chu, khao cuu, thao cua
han hang » hang hang, han chang, ban hang
tuan ban » tuan bang, toan ban, quang ban
luan ban » luan van, luan san, luat ban
luan han » luan hoan, luan phan, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo cuu tinh - hanh trinh han hang dung tai ((tuan ban) or (((luan ban) OR (luan han))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo cuu tinh - hanh trinh han hang dung tai ((tuan ban) OR (((luan ban) OR (luan han)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo cuu tinh - hanh trinh han hang dung tai ((tuan ban) or (((luan ban) OR (luan han))))".
• Adding a wildcard symbol may retrieve word variants: theo cuu tinh - hanh trinh han hang dung tai ((tuan ban) or (((luan ban) OR (luan han))))*.