Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh vat » trinh luat, sinh vat, trinh han
trinh van » trinh han, trinh quan, trinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
song van » hoang van, trong van, duong van
cong tac » cong ty
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 vat) OR (trinh van)) nhung ((song van) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((trinh vat) OR (trinh van)) nhung ((song van) OR (cong tac)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh ((trinh vat) OR (trinh van)) nhung ((song van) or (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((trinh vat) OR (trinh van)) nhung ((song van) or (cong tac)) toan cao*.