Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh thuc » trinh tu, trinh thi
tieu dung » dieu duong, tin dung, viet dung
thuc hang » thuc hanh, thu hang, phuc hang
cong vang » cong lang, cong quang, cong ngang
cong van » cong san, cong tan, cong va
song van » hoang van, trong van, duong van
tuan ban » tuan bang, toan ban, luan ban

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

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