Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
canh tinh » hanh tinh, manh tinh, canh tranh
cong cong » cong dong, trong cong, dung cong
phap phan » phap phat, phap hoan, phap luan
toc hieu » toc thieu, doc hieu, hoc thieu
tinh han » trinh han, tinh than, tinh hai
han cong » phan cong, hang cong, hanh cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - canh tinh han cong cong ((phap phan) or (kham pha)) bi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - canh tinh han cong cong ((phap phan) OR (kham pha)) bi*.