Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
thong tan » thong than, thong tran, thong tin
dung cua » dung luan, dung cho
tan phan » toan phan, than phan, van phan
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 thieu xanh - thanh ((trung cua) or (dung cua)) thong thong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cua) OR (dung cua)) thong thong tan phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cua) or (dung cua)) thong thong tan phan cau*.