Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trinh quan » tinh quang, trinh luat, trinh han
trinh cua » tinh cua, trinh luat, trinh luan
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
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: ho chieu sang - hanh ((trinh cua) or (trinh quan)) nhung ((cong san) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh ((trinh cua) OR (trinh quan)) nhung ((cong san) OR (cong tan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((trinh cua) or (trinh quan)) nhung ((cong san) or (cong tan)) toan cau*.