Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
doi chieu » doc hieu, doi chi, mot chieu
canh manh » lanh manh, canh tranh, cach mang
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, mot chieu
manh cua » doanh cua, ban cua
tan phan » toan phan, than phan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (doi chieu)) xanh - canh manh cua ((nhung cong) OR (hang cong)) tan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - canh manh cua ((nhung cong) OR (hang cong)) tan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) xanh - canh manh cua ((nhung cong) OR (hang cong)) tan phan tu".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - canh manh cua ((nhung cong) OR (hang cong)) tan phan tu*.