Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
truong cao » truong dai
cong thanh » dong thanh, cong trinh, cong tan
hoc chieu » hoc thieu, ho chieu, hoc hien
truong ca » truong va, trong ca, truong dai
cong manh » cong danh, duong manh, hoang manh
toan cau » toan cao, toan ban, toan tap

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