Perhaps you should try some spelling variations:
thanh tung » thanh cong
dung cong » dung trong
tung cua » trung cua, tuong cua, dung cua
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
ho lieu » so lieu, ho kieu, ho chieu
co lieu » cot lieu, co hieu, so lieu

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

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