Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chieu sang, chieu xanh
thuong van » thong van, truong van, thuong va
cau thang » cang thang, cuu thanh, nam thang
van thanh » ban thanh, van tuan
thanh cau » thanh chau, thanh mau, nhanh cau
cap han » cap phan, cap can, cap hay

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chiet tach) OR (chieu sach)) - thanh trung ((cau thang) or (cap han)) thuong van thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (chieu sach)) - thanh trung ((cau thang) OR (cap han)) thuong van thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chiet tach) OR (chieu sach)) - thanh trung ((cau thang) or (cap han)) thuong van thanh cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) OR (chieu sach)) - thanh trung ((cau thang) or (cap han)) thuong van thanh cau*.