Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc
danh nhan » doanh nhan, thanh nhan, benh nhan
cach noi » hanh noi, anh noi, cau noi
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
hoc hang » hoc hanh, hoc bang, hoc tang
hang hoa » hang khoa, thanh hoa, hang va
nha danh » nhat danh, nha doanh, nha lanh
nhan tao » nhan tai, nhan dan
hoc may » hoc ma
may nha » mai nha, mat nha, may nhe

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((cach noi) OR (cach thoi)) tap, nghien cuu cong hoc hang hoa hoc may nha danh nhan tao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((cach noi) OR (cach thoi)) tap, nghien cuu cong hoc hang hoa hoc may nha danh nhan tao".
• Adding a wildcard symbol may retrieve word variants: te ((cach noi) OR (cach thoi)) tap, nghien cuu cong hoc hang hoa hoc may nha danh nhan tao*.