Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong tinh » thuong tinh, thong tin, trong tinh
thong minh » thong tin, hoang minh
tieu sang » chieu sang, tieu dung, tiem nang
trinh thi » trinh tai, dinh thi, trinh tu
thi thong » thi thuong, thi hong, thi khong

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sang - hanh trinh thi thong ((thong tinh) OR (thong minh)) van ban~.
• Adding a wildcard symbol may retrieve word variants: theo tieu sang - hanh trinh thi thong ((thong tinh) or (thong minh)) van ban*.