Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
hanh tram » hanh tam, hanh trang, thanh tran
manh toan » thanh toan, tinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
tram van » tran van, tam van, trang 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 sach - hanh tram van ((nhung cong) or (thong cong)) ((manh toan) OR (anh tuan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tram van ((nhung cong) OR (thong cong)) ((manh toan) OR (anh tuan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh tram van ((nhung cong) or (thong cong)) ((manh toan) OR (anh tuan)) cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tram van ((nhung cong) or (thong cong)) ((manh toan) OR (anh tuan)) cao*.