Perhaps you should try some spelling variations:
thieu nganh » hieu nganh, trien nganh, nghiep nganh
ganh nang » nganh nong, van nang, sach nang
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
dang hanh » dang thanh, ban hanh, dang van
nang dua » nang du, nang suat, nang quan
hanh ca » hanh cac, hanh cat, hanh cua

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 nganh - ganh nang dua ((cong cong) or (dung cong)) dang hanh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu nganh - ganh nang dua ((cong cong) OR (dung cong)) dang hanh ca*.