Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung huong » nhung tuong, nhung cong, nhung dung
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
tranh cua » doanh cua, manh cua
phan dau » phan tu, hang dau
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu tinh - canh tranh cua ((nhung huong) OR (nhung phuong)) dan ((phan dau) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tinh - canh tranh cua ((nhung huong) OR (nhung phuong)) dan ((phan dau) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu tinh - canh tranh cua ((nhung huong) OR (nhung phuong)) dan ((phan dau) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - canh tranh cua ((nhung huong) OR (nhung phuong)) dan ((phan dau) or (khan cap))*.