Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
trung cong » truong cong, trong cong, trung uong
trinh cua » tinh cua, trinh luat, trinh quan
cua trung » cua truong, xuan trung, cua nhung
manh toan » thanh toan, anh tuan

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 xanh) or (chieu xanh)) - hanh trinh cua trung cong ((manh toan) OR (tinh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - hanh trinh cua trung cong ((manh toan) OR (tinh toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - hanh trinh cua trung cong ((manh toan) OR (tinh toan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - hanh trinh cua trung cong ((manh toan) OR (tinh toan)) ban*.