Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » thong cong, hang cong, nhung don
tranh cua » doanh cua, manh cua
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
toan tap » toan ban

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