Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc cong pd snippets" » "hoc co pd snippets", "cac cong pd snippets", "hoc dung pd snippets", "hoc cong pgs snippets", "hoc cong phu 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: (((("hoc cong pd snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc cong pd snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc cong pd snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc cong pd snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.