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