Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
dung cong » dung trong
vinh toan » tinh toan, hinh toan, minh toan
ho chieu » theo chieu, hoc thieu, doi chieu
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 - hanh trinh quan ((dung cong) OR (thong thong)) vinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh trinh quan ((dung cong) OR (thong thong)) vinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh trinh quan ((dung cong) OR (thong thong)) vinh toan cau*.