Perhaps you should try some spelling variations:
thanh tung » thanh cong
dung cong » dung trong
ho trieu » mot trieu, ho chieu, 10 trieu
tung cua » trung cua, tuong cua, dung cua
cua dung » cua dang, cua dong, qua dung
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho trieu) or (((25 trieu) OR (30 trieu)))) tinh - thanh tung cua dung cong tam toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (((25 trieu) OR (30 trieu)))) tinh - thanh tung cua dung cong tam toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) or (((25 trieu) OR (30 trieu)))) tinh - thanh tung cua dung cong tam toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (((25 trieu) OR (30 trieu)))) tinh - thanh tung cua dung cong tam toan cau*.