Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong tinh » phuong trinh, phuong binh, khuong tinh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
toan tap » toan ban

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 - hanh ((tang cua) OR (mang cua)) nhung phuong tinh toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((tang cua) OR (mang cua)) nhung phuong tinh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((tang cua) OR (mang cua)) nhung phuong tinh toan tap*.