Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nen hanh de snippets" » "nen thanh de snippets", "nien hanh de snippets", "den hanh de snippets", "nen hanh ve snippets", "nen hanh kem 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: (((("nen hanh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nen hanh de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nen hanh de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nen hanh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.