Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
nhanh hai » nhanh thai, thanh hai, nhanh ha
hang cong » dang cong, hang nong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
toan cao » toan ban, toan tap
hai cua » thai cua, dai cua, hoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - nhanh hai cua ((nhung cong) or (hang cong)) manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - nhanh hai cua ((nhung cong) OR (hang cong)) manh toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - nhanh hai cua ((nhung cong) or (hang cong)) manh toan cao*.