Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"giap voi can snippets" » "gian voi can snippets", "gia moi can snippets", "giap thi can snippets", "giap voi cac snippets", "giap voi cong snippets", "giap voi hang 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: (((("giap voi 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: (((("giap voi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( giap voi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("giap voi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.