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