Perhaps you should try some spelling variations:
trong doanh » trong nganh
thieu sang » chieu sang, thieu khang, thieu quang
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh va » trinh van, trinh vat, trinh ve
va tuong » va thuong, va thong, xa truong
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - hanh trinh va tuong ((cong dan) or (trong doanh)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh trinh va tuong ((cong dan) OR (trong doanh)) van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh trinh va tuong ((cong dan) or (trong doanh)) van ban*.