Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
thieu anh » thien anh, thien danh, thieu nhi
tinh tran » tinh trang, tinh toan, tinh than
tran khoa » toan khoa, san khoa, nhan khoa
cong than » cong thanh, cong thang, cong tan
than phan » thanh phan, toan phan, thanh pham
khoa ung » khoa dung, hoa ung, khoa trung
ung cong » dung cong, luong cong, duong cong
phan lap » phan dau

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 anh) or (((chieu xanh) OR (chieu sang)))) - tinh tran khoa ung cong than phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu anh) OR (((chieu xanh) OR (chieu sang)))) - tinh tran khoa ung cong than phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu anh) or (((chieu xanh) OR (chieu sang)))) - tinh tran khoa ung cong than phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu anh) or (((chieu xanh) OR (chieu sang)))) - tinh tran khoa ung cong than phan lap*.