Perhaps you should try some spelling variations:
thieu nganh » hieu nganh, trien nganh, nghiep nganh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dang cong
dung cong » dung trong
dan hanh » dang hanh, dan khanh, dan thanh
hanh cac » hang cac, hanh cat, hanh cham

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu nganh - canh tranh cua ((tong cong) or (dung cong)) dan hanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu nganh - canh tranh cua ((tong cong) OR (dung cong)) dan hanh cac*.