Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc tam chan snippets" » "doc tam than snippets", "doc cam chan snippets", "doc tam cham snippets", "don tam chan snippets", "hoc tam chan snippets", "duc tam chan 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: (((("doc tam chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc tam chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc tam chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc tam chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.