Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh chat
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh thuc » trinh tu, trinh thi
phung cong » nhung cong, nhung chong, dung cong
phong cong » phong chong, thong cong, chong cong
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
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 thuat) or (trinh thuc)) ((phung cong) OR (phong cong)) manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((trinh thuat) OR (trinh thuc)) ((phung cong) OR (phong cong)) manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh ((trinh thuat) or (trinh thuc)) ((phung cong) OR (phong cong)) manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((trinh thuat) or (trinh thuc)) ((phung cong) OR (phong cong)) manh toan cao*.