Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
thanh tung » thanh cong
thiet anh » thien anh, thuyet anh, thich anh
thanh lap » thanh san, phan lap, thanh hai
tung cua » trung cua, tuong cua, dung cua
cua tong » cua cong, cua dong, cua nong
cong tac » cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet anh) OR (thien danh)) - thanh tung cua tong ((cong san) or (cong tac)) thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet anh) OR (thien danh)) - thanh tung cua tong ((cong san) OR (cong tac)) thanh lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thiet anh) OR (thien danh)) - thanh tung cua tong ((cong san) or (cong tac)) thanh lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet anh) OR (thien danh)) - thanh tung cua tong ((cong san) or (cong tac)) thanh lap*.