Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trung » thanh trung, hanh trang, manh trung
hanh trinh » canh tranh, hanh chinh
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trong van » trong cac
anh dung » anh dong, anh huong, sach dung
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao

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 - ((hanh trung) or (hanh trinh)) anh dung trong van tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - ((hanh trung) OR (hanh trinh)) anh dung trong van tuan cao.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - ((hanh trung) or (hanh trinh)) anh dung trong van tuan cao*.