Perhaps you should try some spelling variations:
nhung phuong » dung phuong, truong phuong, bang phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhu phuong » thu phuong, thi phuong, thu huong
lan tran » lan tranh, tan tran, ban tran
tran cau » tran chau, toan cau, ran cau
ha dong » hoat dong

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 sach - ((ha dong) or (van dong)) luan ((nhung phuong) OR (nhu phuong)) lan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((ha dong) OR (van dong)) luan ((nhung phuong) OR (nhu phuong)) lan tran cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((ha dong) or (van dong)) luan ((nhung phuong) OR (nhu phuong)) lan tran cau".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((ha dong) or (van dong)) luan ((nhung phuong) OR (nhu phuong)) lan tran cau*.