Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc chinh de snippets" » "hoan chinh de snippets", "hoc sinh de snippets", "hoc kinh de snippets", "hoc chinh den snippets", "hoc chinh ke snippets", "hoc chinh do 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 chinh de 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 chinh de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc chinh de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chinh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.