Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong tin bo snippets" » "thong tin bo snippets", "luong tin bo snippets", "dong kinh bo snippets", "dong tien bo snippets", "dong tin so snippets", "dong tin co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong tin bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong tin bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tin bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tin bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.