Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
khong cang » thong cong, hong bang, khong dung
trinh cua » tinh cua, trinh luat, trinh quan
cua khong » hua khong, cua phuong, cua thuong
hoc hieu » hoc thieu, hoc hien, hoc dieu
doc hieu » toc thieu, hoc thieu, hoc hien
cang dan » cong dan, tang dan, canh dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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) or (doc hieu)) manh - hanh trinh cua khong cang dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (doc hieu)) manh - hanh trinh cua khong cang dan than cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (doc hieu)) manh - hanh trinh cua khong cang dan than cau*.