Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cai dieu can snippets" » "cau dieu can snippets", "cac dieu can snippets", "cao dieu can snippets", "cai dieu hanh snippets", "cai tiep can snippets", "cai dieu cua 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: (((("cai dieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cai dieu can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cai dieu can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cai dieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.