Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh, hanh chinh
trinh thuc » trinh tu, trinh thi
thuc hang » thuc hanh, thu hang, phuc hang
trong van » trong cac
ho chieu » theo chieu, hoc thieu, doi chieu
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - hanh trinh thuc hang ((cong van) or (trong van)) tuyen tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - hanh trinh thuc hang ((cong van) OR (trong van)) tuyen tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - hanh trinh thuc hang ((cong van) or (trong van)) tuyen tap*.