Perhaps you should try some spelling variations:
truong trung » tieng trung
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tai
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: ho chieu xanh - canh tranh va nhung ((cong tan) or (truong trung)) ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh tranh va nhung ((cong tan) OR (truong trung)) ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - canh tranh va nhung ((cong tan) or (truong trung)) ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh tranh va nhung ((cong tan) or (truong trung)) ((toan cau) OR (toan tap))*.