Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao tri moi snippets" » "dao thi moi snippets", "bao tri moi snippets", "dao tru moi snippets", "dao tri mot snippets", "dao tri doi 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: (((("dao tri 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: (((("dao tri moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao tri moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao tri moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.