Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"he nhieu hoc snippets" » "he nhiet hoc snippets", "he hieu hoc snippets", "he nhieu goc snippets", "hop nhieu hoc snippets", "phu nhieu hoc snippets", "he dieu hoc 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: (((("he nhieu hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("he nhieu hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( he nhieu hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("he nhieu hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.