Perhaps you should try some spelling variations:
thanh tung » thanh cong
quan trong » gian trong
tung quan » tuong quan, trung quan, dung quan
cong tuan » cong tan, cong luan, cong thanh
tuan phan » luan phan, toan phan, tuan pham
hoc hieu » hoc thieu, doc hieu, hoc dieu
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hieu) OR (hoc hien)) manh - thanh tung quan trong cong tuan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc hien)) manh - thanh tung quan trong cong tuan phan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc hien)) manh - thanh tung quan trong cong tuan phan cau*.