Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, khuong tinh
hanh trang » thanh trung, hanh trinh, minh trang
chieu sang » chieu sach, chieu xanh, nhieu tang
chu phuong » cuu phuong, thu phuong, cau phuong
hieu lang » hieu quang, nhieu tang, hieu van
toan tap » toan ban
cua chu » sua chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) OR (hieu lang)) - ((hanh trang) or (canh tranh)) cua chu phuong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu lang)) - ((hanh trang) OR (canh tranh)) cua chu phuong tinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (hieu lang)) - ((hanh trang) or (canh tranh)) cua chu phuong tinh toan tap".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (hieu lang)) - ((hanh trang) or (canh tranh)) cua chu phuong tinh toan tap*.