Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thanh chau » thanh cha, thanh cham, thanh chu
hanh hang » thanh hang, hanh han, hanh mang
hang hang » nang hang, cang thang, hung thang
chua nang » chuc nang, chua xang, kha nang
cong dang » cong dan, cong dung, cong danh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - ((hanh hang) or (hang hang)) chua nang ((cong dang) OR (cong dong)) thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - ((hanh hang) OR (hang hang)) chua nang ((cong dang) OR (cong dong)) thanh chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - ((hanh hang) or (hang hang)) chua nang ((cong dang) OR (cong dong)) thanh chau".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - ((hanh hang) or (hang hang)) chua nang ((cong dang) OR (cong dong)) thanh chau*.