Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"truc dan cau snippets" » "truc dan code snippets", "thuc dan cau snippets", "tuc dan cau snippets", "truc ban cau snippets", "truc danh cau snippets", "truc dan ca snippets", "truc dat cau snippets"
"python using java snippets" » "python using data 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: (((("truc dan cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("truc dan cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( truc dan cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truc dan cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.