Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam anh son snippets" » "lam banh son snippets", "lam lanh son snippets", "lan anh son snippets", "lam anh dong snippets", "lam tinh son 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: (((("lam anh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lam anh son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam anh son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam anh son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.