Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tam toan ve snippets" » "tap toan ve snippets", "tam than ve snippets", "tam thanh ve snippets", "tam toan va snippets", "tam toan ke snippets", "tam toan von 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 toan ve 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 toan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tam toan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tam toan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.