Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
ban than » ban thanh, van thanh, ban hang
van tuan » van quan, van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh trinh cua nhung cong ((ban than) or (((van tuan) OR (anh tuan)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh trinh cua nhung cong ((ban than) OR (((van tuan) OR (anh tuan)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh trinh cua nhung cong ((ban than) or (((van tuan) OR (anh tuan)))) cau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh trinh cua nhung cong ((ban than) or (((van tuan) OR (anh tuan)))) cau*.