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