Perhaps you should try some spelling variations:
thieu nganh » hieu nganh, trien nganh, nghiep nganh
canh trinh » canh tranh, hanh trinh, canh tinh
hoc thieu » toc thieu, hoc hien
cong sang » cong lang, cong vang, cong bang
cong san » cong tac
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau
ky dung » ly dung, ky dang, ky vung

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 trinh ky dung ((cong san) or (cong sang)) ((phan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu nganh - canh trinh ky dung ((cong san) OR (cong sang)) ((phan cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu nganh - canh trinh ky dung ((cong san) or (cong sang)) ((phan cau) or (phan dau))*.