Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trung tuan » trung thanh, trung tam, truong thanh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung cap, dung cua
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cao » toan ban, toan tap

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 (((trung tuan) or (tran tuan)))) dung cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cua) OR (((trung tuan) OR (tran tuan)))) dung cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cua) or (((trung tuan) or (tran tuan)))) dung cong tap toan cao*.