Perhaps you should try some spelling variations:
nhung phuong » nhu phuong, truong phuong, bang phuong
thanh trung » thanh tung
dung phuong » dung thuong, bang phuong, dung chung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung va » truong va, trang va, trung ha
than cao » toan cao, than cap, than sao
thai cao » tai cao, thoai cac, thuat cao

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 - thanh trung va ((nhung phuong) OR (dung phuong)) ban ((than cao) or (thai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung va ((nhung phuong) OR (dung phuong)) ban ((than cao) OR (thai cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh trung va ((nhung phuong) OR (dung phuong)) ban ((than cao) or (thai cao))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung va ((nhung phuong) OR (dung phuong)) ban ((than cao) or (thai cao))*.