Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi cuong ve snippets" » "thi cong ve snippets", "thi huong ve snippets", "thi truong ve snippets", "thi cuong vo snippets", "thi duong ve snippets", "thi luong va 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 cuong ve 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 cuong ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi cuong ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi cuong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.