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