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