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