Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi chap moi snippets" » "thi phap moi snippets", "thi cham moi snippets", "thi cap moi snippets", "thi chat moi snippets", "thi thap muoi 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 chap moi 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 chap moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi chap moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi chap moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.