Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc hang loi snippets" » "doc hanh loi snippets", "hoc hang loi snippets", "oc hang loi snippets", "doc thang loi snippets", "doc hang doi snippets", "doc tang loi 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: (((("doc hang loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc hang loi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc hang loi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc hang loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.