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