Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do kinh ve snippets" » "doi kinh ve snippets", "do dinh ve snippets", "bo kinh ve snippets", "do kinh te snippets", "do minh 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: (((("do kinh ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("do kinh ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( do kinh ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("do kinh ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.