Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
cong vinh » cong trinh, trong vinh, cong viec
vinh toan » tinh toan, hinh toan, minh toan
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
tran van » luan van
toan ban » van ban

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 - thanh ((trung va) or (tran van)) thong cong vinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung va) OR (tran van)) thong cong vinh toan ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung va) or (tran van)) thong cong vinh toan ban*.