Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
nang cong » nang song, dang cong, hang cong
bang cong » dang cong, bang song, hang cong
trung ha » trung hoc, trung tam, trung cap
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) OR (chieu sang)) - thanh trung ha ((nang cong) OR (bang cong)) dan than tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sang)) - thanh trung ha ((nang cong) OR (bang cong)) dan than tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sang)) - thanh trung ha ((nang cong) OR (bang cong)) dan than tap*.