Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi xuyen co snippets" » "thi huyen co snippets", "thi yen co snippets", "thi xuan co snippets", "thi duyen co snippets", "thi luyen co snippets", "thi tuyen co 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 co 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 co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi xuyen co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi xuyen co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.