Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhanh lang » nhanh quang, nhanh thang, nhan dang
bang cong » dang cong, hang cong, dung cong
bang song » nang song
ho trieu » mot trieu, 25 trieu, 30 trieu
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho trieu tinh - ((hanh trinh) or (nhanh lang)) cua ((bang cong) OR (bang song)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho trieu tinh - ((hanh trinh) OR (nhanh lang)) cua ((bang cong) OR (bang song)) dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho trieu tinh - ((hanh trinh) or (nhanh lang)) cua ((bang cong) OR (bang song)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho trieu tinh - ((hanh trinh) or (nhanh lang)) cua ((bang cong) OR (bang song)) dan toan cao*.