Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thien anh » thien danh, tien anh, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
ban quan » van quan
cong dan » cong san, cong tan, huong dan
dan chat » van chat, dan chan, ban chat
chat ban » nhat ban, chat ran, cua 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 ((thien anh) or (hieu manh)) - anh ((ban cua) or (ban quan)) thong cong dan chat ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (hieu manh)) - anh ((ban cua) OR (ban quan)) thong cong dan chat ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (hieu manh)) - anh ((ban cua) or (ban quan)) thong cong dan chat ban*.