Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi xuyen so snippets" » "thi huyen so snippets", "thi yen so snippets", "thi xuan so snippets", "thi xuyen soc snippets", "thi quyen so snippets", "thi huyen son 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: (((("thi xuyen so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi xuyen so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi xuyen so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi xuyen so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.