Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tung » thanh cong
dung cong » dung trong
tien anh » tieng anh, tien manh, dien anh
tung cua » trung cua, tuong cua, dung cua
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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) or (tien anh))) or (chieu tinh)) - thanh tung cua dung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu xanh) OR (tien anh))) OR (chieu tinh)) - thanh tung cua dung cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu xanh) or (tien anh))) or (chieu tinh)) - thanh tung cua dung cong tan toan cao*.