Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
trinh than » trinh thanh, trinh han, trinh toan
theo lieu » theo tieu, theo yeu, thi lieu
dung cong » dung trong
quang va » quang van, quang ma, quang nam
than cau » toan cau, phan cau, than cap
quan va » quan vi, quan ha, luan va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo lieu) OR (theo chieu)) tinh - nhanh ((quang va) or (quan va)) dung cong trinh than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo lieu) OR (theo chieu)) tinh - nhanh ((quang va) OR (quan va)) dung cong trinh than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo lieu) OR (theo chieu)) tinh - nhanh ((quang va) or (quan va)) dung cong trinh than cau".
• Adding a wildcard symbol may retrieve word variants: ((theo lieu) OR (theo chieu)) tinh - nhanh ((quang va) or (quan va)) dung cong trinh than cau*.