Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, nhanh lang, thanh hang
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man
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 mang) or (hanh trang)) va thong cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh mang) OR (hanh trang)) va thong cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh mang) or (hanh trang)) va thong cong dan than ban*.