Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu xanh » chieu sach, chieu sang, chieu tinh
thong cong » trong cong, tong cong, thong thong
dang thanh » dong thanh, dang hanh, hoang thanh
lieu tinh » trieu tinh, diep tinh, bien tinh
dang tran » quang tran, hoang tran, dang van
trinh va » trinh van, trinh vat, trinh ve
va thong » va thuong, va phuong, he thong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (lieu tinh)) - hanh trinh va thong cong ((dang tran) OR (dang thanh)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (lieu tinh)) - hanh trinh va thong cong ((dang tran) OR (dang thanh)) van*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (lieu tinh)) - hanh trinh va thong cong ((dang tran) OR (dang thanh)) van*".