Perhaps you should try some spelling variations:
thanh tung » thanh cong
tang cuong » nang luong
dang cong » dung cong
chi tach » chiu trach, chiet tach, chi thanh
tung cao » nung cao, truong cao, trung cap
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi tach - thanh tung cao ((dang cong) or (tang cuong)) van ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi tach - thanh tung cao ((dang cong) OR (tang cuong)) van ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: doi chi tach - thanh tung cao ((dang cong) or (tang cuong)) van ((toan cau) or (toan cao))*.