Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
cuong cong » luong cong, duong cong, dung cong
hoc thieu » toc thieu, hoc hien
cong cong » cong dong, trong cong, dung cong
doc hieu » toc thieu, hoc hien
lang van » dang van, tang van, hoang van
toan cao » toan ban, toan tap

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) or (doc hieu)) sach - nhanh lang van ((cuong cong) OR (cong cong)) tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doc hieu)) sach - nhanh lang van ((cuong cong) OR (cong 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 van ((cuong cong) OR (cong cong)) tinh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (doc hieu)) sach - nhanh lang van ((cuong cong) OR (cong cong)) tinh toan cao*.