Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lap dan cong snippets" » "lap dang cong snippets", "lap van cong snippets", "lap dan dong snippets", "lap dat cong snippets", "lap ban cong snippets", "hap dan cong 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: (((("lap dan cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lap dan cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lap dan cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap dan cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.