Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son gia cham snippets" » "son gian cham snippets", "son gia cam snippets", "son gia chat snippets", "so gia cham snippets", "ton gia cham snippets", "song giao cham 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: (((("son gia cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son gia cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son gia cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son gia cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.