Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong doan » phuong loan, phuong hoang, huong dan
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
doan toan » dan toan, doan tuan, doanh hoan
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
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: ho ((hieu lang) OR (chieu sang)) - hanh ((mang cua) or (dung cua)) nhung phuong doan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu sang)) - hanh ((mang cua) OR (dung cua)) nhung phuong doan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (chieu sang)) - hanh ((mang cua) or (dung cua)) nhung phuong doan toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (chieu sang)) - hanh ((mang cua) or (dung cua)) nhung phuong doan toan tap*.