Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong qua du snippets" » "duong qua du snippets", "dong cua du snippets", "dong mua du snippets", "dong qua dau snippets", "dong qua su snippets", "dong qua cu 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 du 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 du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong qua du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong qua du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.