Perhaps you should try some spelling variations:
phuong dan » phuong danh, phuong doan, huong dan
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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 (doi chieu)) tinh - thanh cong ((cua dung) or (cua dong)) phuong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) tinh - thanh cong ((cua dung) OR (cua dong)) phuong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) tinh - thanh cong ((cua dung) or (cua dong)) phuong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) tinh - thanh cong ((cua dung) or (cua dong)) phuong dan phan cau*.