Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan cao
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 - canh tranh cua thong cong dan ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh cua thong cong dan ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh cua thong cong dan ((toan tai) or (toan ban))*.