Perhaps you should try some spelling variations:
toan thiet » luan thiet, toan tien
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh ve » trinh he, trinh va, trinh vi
ve nhung » va nhung, tu nhung
cong dan » cong san, cong tan, huong dan
toan ban » van 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: ((toan thiet) OR (hoan thien)) anh - hanh trinh ve nhung cong dan ((toan tap) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toan thiet) OR (hoan thien)) anh - hanh trinh ve nhung cong dan ((toan tap) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ((toan thiet) OR (hoan thien)) anh - hanh trinh ve nhung cong dan ((toan tap) or (toan ban))*.