Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu nganh » vien nganh, hiem ngan, hieu manh
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
van thanh » ban thanh, van tuan
thanh cao » thanh ca, thanh cac, thanh thao
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (hieu nganh)) - hanh ((trung cua) OR (trung tuan)) hang cong van thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (hieu nganh)) - hanh ((trung cua) OR (trung tuan)) hang cong van thanh cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (hieu nganh)) - hanh ((trung cua) OR (trung tuan)) hang cong van thanh cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (hieu nganh)) - hanh ((trung cua) OR (trung tuan)) hang cong van thanh cao*.