Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
manh cua » doanh cua
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban
ban cua » ban quan

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: theo tieu tinh - hanh ((manh cua) OR (ban cua)) thong cong dan ((toan tai) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - hanh ((manh cua) OR (ban cua)) thong cong dan ((toan tai) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - hanh ((manh cua) OR (ban cua)) thong cong dan ((toan tai) or (toan ban))*.