Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
canh trinh » hanh trinh, canh tinh, anh trinh
hoc thieu » toc thieu, hoc hien
trong van » trong cac
ho chieu » theo chieu, doi chieu, mot chieu
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: ((ho chieu) OR (hoc thieu)) sach - ((canh trinh) or (canh tranh)) va nhung trong van phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - ((canh trinh) OR (canh tranh)) va nhung trong van phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - ((canh trinh) or (canh tranh)) va nhung trong van phan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - ((canh trinh) or (canh tranh)) va nhung trong van phan cau*.