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