Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
quang tuan » quang thanh, quan luan, quang cua
tung tuan » trung tuan, hung tuan, trang tuan
cuong tap » luong tap, cong tac, luong tai
ho chieu » theo chieu, hoc thieu, doi chieu
cong tap » cong tac, cong tan, tong tap
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 xanh - thanh ((tung tuan) OR (quang tuan)) nhung ((cong tap) or (cuong tap)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh ((tung tuan) OR (quang tuan)) nhung ((cong tap) OR (cuong tap)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh ((tung tuan) OR (quang tuan)) nhung ((cong tap) or (cuong tap)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh ((tung tuan) OR (quang tuan)) nhung ((cong tap) or (cuong tap)) toan cau*.