Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
doc hieu » toc thieu, hoc thieu, hoc hien
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong
cong san » cong tac
chon tu » con tu, cho tu, choi tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu manh - canh tranh va thong cong san ((chon tu) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - canh tranh va thong cong san ((chon tu) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - canh tranh va thong cong san ((chon tu) or (phan tu))*.