Perhaps you should try some spelling variations:
"mao van cach snippets" » "mao van code snippets", "mao va cach snippets", "mao van canh snippets", "mao vat cach snippets", "dao van cach snippets", "cao van cach snippets", "hao 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 ("mao van cach snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java snippets\") OR (\"mao van cach snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( mao van cach snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("mao van cach snippets"))) OR ("locating bug core snippets"))*.