Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh tung » thanh cong
phuong dan » phuong danh, huong dan, phuong lan
tung tran » trung tran, hung tran, huong tran
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) OR (chieu sang)) - thanh tung tran quang ((phuong dan) or (phuong doan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - thanh tung tran quang ((phuong dan) OR (phuong doan)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chieu sang)) - thanh tung tran quang ((phuong dan) or (phuong doan)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chieu sang)) - thanh tung tran quang ((phuong dan) or (phuong doan)) than cau*.