Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do nhat chan snippets" » "do nhan chan snippets", "do thuat chan snippets", "do nhat ban snippets", "moi nhat chan 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: (((("do nhat chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("do nhat chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( do nhat chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("do nhat chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.