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
tuan bang » tuan dang, tuan hoang, thuat bang
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
tuan ban » toan ban, luan ban, quang 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 (song van)) ((tuan ban) OR (tuan bang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu dung - hanh trinh thuc hang ((cong van) OR (song van)) ((tuan ban) OR (tuan bang)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu dung - hanh trinh thuc hang ((cong van) or (song van)) ((tuan ban) OR (tuan bang))".
• Adding a wildcard symbol may retrieve word variants: theo tieu dung - hanh trinh thuc hang ((cong van) or (song van)) ((tuan ban) OR (tuan bang))*.