Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong manh » phuong anh, phung manh, phuong danh
tieu sach » chieu sach, dien sach, te sach
manh toan » thanh toan, anh tuan, tinh toan
trang va » tran van, hang va
toan ban » van ban
tang va » tang van, thang va, tang vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - hanh ((tang va) OR (trang va)) nhung phuong manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - hanh ((tang va) OR (trang va)) nhung phuong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - hanh ((tang va) OR (trang va)) nhung phuong manh toan ban*.