Perhaps you should try some spelling variations:
trinh thanh » tinh thanh, trinh han, trinh toan
theo chieu » theo tieu, theo chu, thi chieu
hanh mang » nhanh mang, hanh trang, nhanh lang
cua trong » cua truong, qua trong, ca trong
cua trung » cua truong, xuan trung, cua nhung
thanh lap » thanh san, phan lap, thanh hai
ho chieu » hoc thieu, doi chieu, mot chieu

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 (ho chieu)) sang - hanh mang ((cua trong) OR (cua trung)) cong trinh thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sang - hanh mang ((cua trong) OR (cua trung)) cong trinh thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) sang - hanh mang ((cua trong) OR (cua trung)) cong trinh thanh lap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) sang - hanh mang ((cua trong) OR (cua trung)) cong trinh thanh lap*.