Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
cong than » cong thang, cong tan, cong thai
ho chieu » theo chieu, hoc thieu, doi chieu
manh cua » doanh cua, ban cua
doi chi » doi khi

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