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 vang » cong lang, cong quang, cong ngang
cong van » cong san, song van, cong tan
phan cau » phan dau, phan cac, phan tu
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 van) OR (cong vang)) phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu nganh - canh trinh ky dung ((cong van) OR (cong vang)) phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu nganh - canh trinh ky dung ((cong van) OR (cong vang)) phan cau*.