Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh thuc » trinh tu, trinh thi
thuc hang » thuc hanh, thu hang, phuc hang
cong vang » cong quang, cong ngang, cong san
cong lang » cong luong, cong quang, cong ngang
ho trieu » mot trieu, 25 trieu, 30 trieu
cong van » cong san, song van, cong tan
tuan tap » toan tap, tuan tai, tuyen tap

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

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