Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi hieu moi snippets" » "thi chieu moi snippets", "thi hien moi snippets", "thi dieu moi snippets", "thi nhiem moi snippets", "thi hieu so snippets", "thi hieu bo 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: (((("thi hieu moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi hieu moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi hieu moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi hieu moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.