Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach ho voi snippets" » "sach hoi voi snippets", "sach ha voi snippets", "sach lo voi snippets", "sach pho voi snippets", "sach hop voi snippets", "sach hoc voi 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: (((("sach ho voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach ho voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach ho voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach ho voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.