Perhaps you should try some spelling variations:
thanh trung » thanh tung
khong cang » thong cong, hong bang, khong dung
toc chieu » doc hieu, hoc thieu, doi chieu
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
luan phan » luan van, luan hoan
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc chieu) OR (toc thieu)) xanh - thanh trung cua khong cang ((dan phan) or (luan phan)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc chieu) OR (toc thieu)) xanh - thanh trung cua khong cang ((dan phan) OR (luan phan)) tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc chieu) OR (toc thieu)) xanh - thanh trung cua khong cang ((dan phan) or (luan phan)) tu".
• Adding a wildcard symbol may retrieve word variants: ((toc chieu) OR (toc thieu)) xanh - thanh trung cua khong cang ((dan phan) or (luan phan)) tu*.