Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
thanh tra » thanh toan, thanh hoa
bang cong » dang cong, hang cong, dung cong
bang song » nang song
tra tuan » tran tuan, tra quan, tri tuan
ho lieu » so lieu, co lieu, ho kieu
tan van » tran van, tang van, luan van

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