Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
canh manh » lanh manh, canh tranh, cach mang
cua thong » cua thuong, cua khong, cua tong
yen tinh » tuyen tinh
manh cua » doanh cua, ban cua
toan cao » toan ban
toan tap » 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: co ((diep tinh) or (yen tinh)) - canh manh cua thong cong trinh ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co ((diep tinh) OR (yen tinh)) - canh manh cua thong cong trinh ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: co ((diep tinh) or (yen tinh)) - canh manh cua thong cong trinh ((toan cao) or (toan tap))*.