Perhaps you should try some spelling variations:
thuong long » thuong luong, thuong dong, thuong lang
phan thuong » hang thuong, phan xuong
thanh phan » thanh pho, thanh san, thanh toan
hanh thanh » nhanh thanh, thanh thanh, khanh thanh
long span » cong san, dong san, nong san
span van » san van, luan van, tran van
van chat » cao chat
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: ((toc thieu) or (doi chi)) tinh - hanh thanh phan thuong long span van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (doi chi)) tinh - hanh thanh phan thuong long span van chat*.