Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chiet tach » chieu sach
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong hai » cong thai, cong ha, hoang hai
tap cau » tap cac, ta cau, tap can
tao cau » tao cu, tao cao, tao sau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chiet tach)) - canh tranh cua thong cong hai ((tap cau) OR (tao cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chiet tach)) - canh tranh cua thong cong hai ((tap cau) OR (tao cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (chiet tach)) - canh tranh cua thong cong hai ((tap cau) OR (tao cau))".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chiet tach)) - canh tranh cua thong cong hai ((tap cau) OR (tao cau))*.