Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
thong cua » thong quan, thong tu, huong cua
tang luan » dung luan
hoc hieu » hoc thieu, hoc hien, doc hieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van 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 hieu manh - hanh ((thong cua) or (tang luan)) thong cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh ((thong cua) OR (tang luan)) thong cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh ((thong cua) or (tang luan)) thong cong san toan ban*.