Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
cong viet » cong viec, thong viet, nang viet
viet dung » viet hung, viet huong, viet trung
cong vang » cong lang, cong quang, cong ngang
cong san » cong tac
toan tap » toan ban

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