Perhaps you should try some spelling variations:
cong thuong » hang thuong
thuong dan » huong dan, thuong han, thuong dam
lieu tinh » trieu tinh, bien tinh
anh nang » ganh nang, anh bang, anh dang
cao cong » cac cong, cao dang, cua cong
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((lieu tinh) or (diep tinh)) - anh nang cao cong thuong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((lieu tinh) OR (diep tinh)) - anh nang cao cong thuong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((lieu tinh) or (diep tinh)) - anh nang cao cong thuong dan toan cao*.