Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong vi chap snippets" » "dong voi chap snippets", "dong va chap snippets", "don vi chap snippets", "dong thi chap snippets", "dong voi chat 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 vi chap 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 vi chap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong vi chap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong vi chap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.