Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
luong cong » dung cong, trong cong, cong cong
van luong » van duong, van cuong, nang luong
manh toan » thanh toan, anh tuan
ho chieu » theo chieu, hoc thieu, doi chieu
doc hieu » toc thieu, hoc thieu, hoc hien
lang van » dang van, tang van, hoang van

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