Perhaps you should try some spelling variations:
trinh thiet » trinh viet, trinh thi
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
trinh vat » trinh van, trinh luat, sinh vat
manh toan » thanh toan, anh tuan
ho chieu » theo chieu, hoc thieu, doi chieu

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 thiet) or (trinh vat)) nhung cong ((manh toan) OR (tinh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((trinh thiet) OR (trinh vat)) nhung cong ((manh toan) OR (tinh toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh ((trinh thiet) or (trinh vat)) nhung cong ((manh toan) OR (tinh toan)) tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((trinh thiet) or (trinh vat)) nhung cong ((manh toan) OR (tinh toan)) tap*.