Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat trien du snippets" » "dat tren du snippets", "dat thien du snippets", "dat tien du snippets", "dat trien cua snippets", "dat trien quy snippets", "dat truyen du 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: (((("dat trien du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat trien du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat trien du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat trien du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.