Perhaps you should try some spelling variations:
thanh tung » thanh cong
cong thanh » dong thanh, cong trinh, cong tan
lieu tinh » trieu tinh, diep tinh, bien tinh
cua nhung » va nhung
tung cua » trung cua, tuong cua, dung cua
cong san » cong tac
ho lieu » so lieu, co lieu, ho kieu

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 tinh - thanh tung cua nhung ((cong thanh) or (cong san)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - thanh tung cua nhung ((cong thanh) OR (cong san)) van ban.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - thanh tung cua nhung ((cong thanh) or (cong san)) van ban*.