Perhaps you should try some spelling variations:
dong thanh » truong thanh
tieu xanh » tieu danh, chieu xanh, dieu hanh
nang dong » nang song, lang dong, nang luong
tranh va » tranh van, trang va, trinh va
toan cao » toan ban
toan tap » toan ban
va nang » van nang, da nang, cam nang

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 - canh tranh va nang dong thanh ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - canh tranh va nang dong thanh ((toan cao) OR (toan tap))*.