Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chung thi le snippets" » "phung thi le snippets", "chung chi le snippets", "nhung thi le snippets", "chung thi ly snippets", "chung thi lien 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: (((("chung thi le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung thi le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung thi le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung thi le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.