Perhaps you should try some spelling variations:
luan phuong » lan phuong, quang phuong, doan phuong
phuong cong » phuong dong, phong cong, phung cong
hanh trinh » canh tranh, hanh chinh
hoi thuat » khoi thuat, hoc thuat, hoi thao
ki thuat » ky thuat
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoi thuat) OR (ki thuat)) tinh - ((hanh trinh) OR (than kinh)) luan phuong cong dan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoi thuat) OR (ki thuat)) tinh - ((hanh trinh) or (than kinh)) luan phuong cong dan toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((hoi thuat) OR (ki thuat)) tinh - ((hanh trinh) or (than kinh)) luan phuong cong dan toan tap*.