Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
thanh tung » thanh cong
phuong dan » phuong danh, huong dan, phuong lan
hoc thieu » toc thieu, hoc hien
tung tran » trung tran, hung tran, huong tran
ho chieu » theo chieu, doi chieu, mot chieu
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) OR (hoc thieu)) sach - 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) OR (hoc thieu)) sach - 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) OR (hoc thieu)) sach - thanh tung tran quang ((phuong dan) or (phuong doan)) than cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - thanh tung tran quang ((phuong dan) or (phuong doan)) than cau*.