Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tat toan cua snippets" » "tap toan cua snippets", "tat tan cua snippets", "tam toan cua snippets", "tat than cua snippets", "tat doanh cua 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: (((("tat toan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tat toan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tat toan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tat toan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.