Perhaps you should try some spelling variations:
thieu nganh » hieu nganh, trien nganh, nghiep nganh
canh trinh » canh tranh, hanh trinh, canh tinh
cong quang » luong quang, thong quang, duong quang
hoc thieu » toc thieu, hoc hien
cong vang » cong lang, cong ngang, cong san
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) OR (cong quang)))) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu nganh - canh trinh ky dung ((cong van) OR (((cong vang) OR (cong quang)))) 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) OR (cong quang)))) phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu nganh - canh trinh ky dung ((cong van) or (((cong vang) OR (cong quang)))) phan cau*.