Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
tieu sang » chieu sang, tieu dung, tiem nang
nang cong » nang song, dang cong, bang cong
cong san » cong tac
san than » sang than, san thanh, ban than
than ban » thanh ban, toan ban, than man
da nang » cam nang, kha nang, cao 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 sang - ((hanh tranh) OR (canh tranh)) da nang cong san than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sang - ((hanh tranh) OR (canh tranh)) da nang cong san than ban".
• Adding a wildcard symbol may retrieve word variants: theo tieu sang - ((hanh tranh) OR (canh tranh)) da nang cong san than ban*.