Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
chieu sach » chinh sach, chieu sang, chieu xanh
trinh van » trinh han, trinh quan, trinh toan
trong van » trong cac
trinh va » trinh vat, trinh ve, trinh vi
van phan » van phong, van thanh, luan phan
phan cau » phan dau, phan cac, phan tu

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)) - canh ((trinh va) or (trinh van)) nhung trong van phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (chieu sach)) - canh ((trinh va) OR (trinh van)) nhung trong van phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chiet tach) OR (chieu sach)) - canh ((trinh va) or (trinh van)) nhung trong van phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) OR (chieu sach)) - canh ((trinh va) or (trinh van)) nhung trong van phan cau*.