Perhaps you should try some spelling variations:
nhanh lang » nhanh thang, nhan dang, nhanh dong
cuong cong » cong cong, luong cong, duong cong
hoc thieu » toc thieu, hoc hien
van cuong » van chuong, van duong, van cong
cong tinh » cong trinh, cong vinh, long tinh
doc hieu » toc thieu, hoc hien
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doc hieu)) sach - ((nhanh lang) OR (nhanh quang)) van cuong cong tinh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (doc hieu)) sach - ((nhanh lang) OR (nhanh quang)) van cuong cong tinh toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doc hieu)) sach - ((nhanh lang) OR (nhanh quang)) van cuong cong tinh toan cao*.