Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chua me toan snippets" » "cha me toan snippets", "chua xe toan snippets", "chuan he toan snippets", "chua ke toan snippets", "chua le toan snippets", "chua mon toan 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: (((("chua me toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chua me toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chua me toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chua me toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.