Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
trinh cua » trinh luat, trinh quan, trinh luan
chao cuu » chao chu, khao cuu, cap cuu
cham cuu » cap cuu, chat 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.

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