Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong vinh ca snippets" » "cong trinh ca snippets", "trong vinh ca snippets", "cong viec ca snippets", "cong tinh ca snippets", "cong vinh ha snippets", "cong vinh ba 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: (((("cong vinh 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: (((("cong vinh ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong vinh ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong vinh ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.