Perhaps you should try some spelling variations:
chua xang » chua nang, chuc nang, chu bang
hanh hang » thanh hang, hang hang, hanh han
cong cong » cong dong, trong cong, dung cong
chu xanh » chu manh, chieu xanh, chuc danh
hang cua » mang cua, hang ca, huong cua
tap toan » tap doan, tap quan, bai toan
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) OR (chua xang)) - hanh hang cua cong cong ((tap toan) or (van tan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chua xang)) - hanh hang cua cong cong ((tap toan) OR (van tan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) OR (chua xang)) - hanh hang cua cong cong ((tap toan) or (van tan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) OR (chua xang)) - hanh hang cua cong cong ((tap toan) or (van tan)) cau*.