Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
doan phan » doanh phan, toan phan, dan phan
ho chieu » hoc thieu, doi chieu, mot chieu
tung tay » vung tay, dung tay, nung tay
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (ho chieu)) sach - thanh tung tay ((nhung cong) OR (thong cong)) doan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - thanh tung tay ((nhung cong) OR (thong cong)) doan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) sach - thanh tung tay ((nhung cong) OR (thong cong)) doan phan dau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) sach - thanh tung tay ((nhung cong) OR (thong cong)) doan phan dau*.