Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
hoc trong » hoc thuong, hoc tieng, dot trong
tung hoc » trung hoc, tuong hoc, dung hoc
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan dau » phan tu, hang dau

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 tung hoc trong cong tan phan dau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh tung hoc trong cong tan phan dau*.