Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac lieu che snippets" » "bac lieu che snippets", "cac kieu che snippets", "cac bieu che snippets", "cac dieu che snippets", "cac lieu nhe snippets", "cac lieu chiu 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: (((("cac lieu che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac lieu che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac lieu che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac lieu che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.