Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van anh san slippers" » "van thanh san slippers", "van minh san slippers", "tuan anh san slippers", "van hanh san slippers", "van anh sang slippers", "van anh son slippers", "van anh san slippery", "van anh san grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

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