Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong thuc ca snippets" » "dong thuoc ca snippets", "duong thuc ca snippets", "cong thuc ca snippets", "dong thuc cua snippets", "dong thuc can snippets", "dong thuc cao 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 thuc ca 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 thuc ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong thuc ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong thuc ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.