Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
trong doan » trong doanh, trong dan, trong hoan
hoc chieu » hoc thieu, ho chieu, hoc hien
trang vat » trang va, trang vai, tang vat
vat dung » van dung, va dung, viet dung
doan van » doan va, hoang van, luan 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 - hanh trang vat dung trong doan van ban~.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trang vat dung trong doan van ban*.