Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong manh » phuong anh, phung manh, phuong danh
chieu sach » chiet tach, chieu sang, chieu xanh
manh toan » thanh toan, anh tuan, tinh toan
mang cua » manh cua, dung cua, cong cua
toan tap » toan ban
ban cua » ban quan

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) or (chinh sach)) - hanh ((mang cua) OR (ban cua)) nhung phuong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - hanh ((mang cua) OR (ban cua)) nhung phuong manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chinh sach)) - hanh ((mang cua) OR (ban cua)) nhung phuong manh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chinh sach)) - hanh ((mang cua) OR (ban cua)) nhung phuong manh toan tap*.