Perhaps you should try some spelling variations:
vang thanh » van thanh, dang thanh, tang thanh
tieu xanh » tieu danh, chieu xanh, dieu hanh
tran hung » tran quang, tran hoang, tran huu
tran hong » tran hoang, tran trong, tranh hang
cong vang » cong lang, cong quang, cong ngang
thanh ban » thanh san, thanh van, thanh bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - thanh cong ((tran hung) or (tran hong)) cong vang thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - thanh cong ((tran hung) OR (tran hong)) cong vang thanh ban*.