Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chau duoc vo snippets" » "chau doc vo snippets", "che duoc vo snippets", "cuu duoc vo snippets", "chau duoc va snippets", "chau duoc co snippets", "chau duoc do 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: (((("chau duoc vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chau duoc vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chau duoc vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chau duoc vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.