Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thieu xanh » chieu xanh, hieu manh, thien anh
hieu nganh » vien nganh, hiem ngan, hieu manh
lang cong » dang cong, bang cong, hang cong
quang va » quang van, quan va, quang ma
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
va lang » va nang, hoa lang

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 (thien thanh))) or (hieu nganh)) - tran quang va lang cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu xanh) OR (thien thanh))) OR (hieu nganh)) - tran quang va lang cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu xanh) or (thien thanh))) or (hieu nganh)) - tran quang va lang cong dan than cau*.