Perhaps you should try some spelling variations:
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, mot chieu
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, mot chieu
tung cua » trung cua, tuong cua, dung cua
san cao » san cho, san bao, nang cao
san co » ban co, sang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (ho chieu)) tinh - thanh tung cua thong cong trinh ((san cao) or (san co))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) tinh - thanh tung cua thong cong trinh ((san cao) OR (san co)).
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) tinh - thanh tung cua thong cong trinh ((san cao) or (san co))*.