Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
bien tinh » bi tinh, yen tinh, diep tinh
hoc bien » hoc hien, hoc vien, hoa bien
tinh cua » trinh cua, sinh cua, tranh cua
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
toan cao » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc bien tinh - nhanh ((tinh cua) or (tinh chat)) thong cong dan ((toan tap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc bien tinh - nhanh ((tinh cua) OR (tinh chat)) thong cong dan ((toan tap) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc bien tinh - nhanh ((tinh cua) or (tinh chat)) thong cong dan ((toan tap) or (toan cao))*.