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