Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
thanh tung » thanh cong
cua phuong » cuu phuong, cuc phuong, luan phuong
doi chieu » doc hieu, ho chieu, mot chieu
khoan cam » khoa cam, khoan va, phan cam
tung cua » trung cua, tuong cua, dung cua
cong san » cong tac
khan cap » khan ap, than cap, phan cac
doi chi » doi khi

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 (doi chi)) sang - thanh tung cua phuong cong san ((khan cap) or (khoan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sang - thanh tung cua phuong cong san ((khan cap) OR (khoan cam)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) sang - thanh tung cua phuong cong san ((khan cap) or (khoan cam))".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) sang - thanh tung cua phuong cong san ((khan cap) or (khoan cam))*.