Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc chan que snippets" » "hoc phan que snippets", "hoc chat que snippets", "hoc can que snippets", "hoc chang xue snippets", "hoc cho que snippets", "hoc hon que 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 chan que 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 chan que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc chan que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chan que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.