Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"do tang cua snippets" » "do mang cua snippets", "do hang cua snippets", "do tang luan snippets", "de tang cua snippets", "do dang cua snippets", "cao tang cua snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("do tang cua snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("do tang cua snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( do tang cua snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("do tang cua snippets"))) or ("locating bug code snippets"))*.