Perhaps you should try some spelling variations:
tran hoang » tran hong, quan hoang, tran quang
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, hien hanh
hoang van » hang va
nang cong » nang song, dang cong, bang cong
van nang » van quang, van ban, van dong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 (((hieu manh) or (dieu hanh)))) - tran hoang van nang cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (((hieu manh) OR (dieu hanh)))) - tran hoang van nang cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (((hieu manh) or (dieu hanh)))) - tran hoang van nang cong dan than cau*.