Perhaps you should try some spelling variations:
"hao van cach snippets" » "hao van code snippets", "hao va cach snippets", "hao van canh snippets", "hao vat cach snippets", "dao van cach snippets", "ho van cach snippets", "cao van cach snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

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

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