Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
trinh cua » trinh luat, trinh quan, trinh luan
khao cuu » cham cuu, chao chu, kho cua
tinh cua » sinh cua, tinh chat, tranh cua
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "khao cuu van - hanh ((trinh cua) OR (tinh cua)) truong cong dan toan tap~".
• Adding a wildcard symbol may retrieve word variants: khao cuu van - hanh ((trinh cua) OR (tinh cua)) truong cong dan toan tap*.