Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tang » hanh trang, anh tang, hanh mang
bang cong » dang cong, bang song, hang cong
trinh can » trinh han, trinh san, trinh cau
cua bang » chua bang, cua ban, cua dang
cho chu » cho thue
can ban » van ban, toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (cho chu)) sang - ((hanh tang) or (canh tranh)) cua bang cong trinh can ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (cho chu)) sang - ((hanh tang) OR (canh tranh)) cua bang cong trinh can ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (cho chu)) sang - ((hanh tang) or (canh tranh)) cua bang cong trinh can ban*.