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
trong van » trong cac
theo tin » thao tin, theo tieu, theo tcvn
cong van » cong vang, cong san, song 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 tin dung - hanh trinh thuc hang ((cong van) or (trong van)) tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tin dung - hanh trinh thuc hang ((cong van) OR (trong van)) tuan ban.
• Adding a wildcard symbol may retrieve word variants: theo tin dung - hanh trinh thuc hang ((cong van) or (trong van)) tuan ban*.