Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc chu voi snippets" » "hoc cau voi snippets", "hoc cho voi snippets", "hoc thuc voi snippets", "hoc chua voi snippets", "hoc chi voi snippets", "hoc chu vi 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: (((("hoc chu 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: (((("hoc chu voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc chu voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chu voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.