Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than duc he snippets" » "tran duc he snippets", "phan duc he snippets", "than doc he snippets", "than duc hue snippets", "than duc ha snippets", "than muc he 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: (((("than duc 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: (((("than duc he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than duc he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than duc he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.