Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi xuan le snippets" » "thi xa le snippets", "thi lan le snippets", "thi tuan le snippets", "thi xuan liem snippets", "thi xuan loi 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 xuan le 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 xuan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi xuan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi xuan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.