Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong qua cho snippets" » "duong qua cho snippets", "dong cua cho snippets", "dong mua cho snippets", "dong qua co snippets", "dong qua kho snippets", "dong qua chu 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: (((("dong qua cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong qua cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong qua cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong qua cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.