Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh han » trinh quan
cong cong » cong dong, trong cong, dung cong
kham phan » phap phan, dam phan, khai pha
toc hieu » toc thieu, doc hieu, hoc thieu
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 trinh han cong cong ((kham phan) or (kham pha)) bi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - canh trinh han cong cong ((kham phan) OR (kham pha)) bi*.