Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong dan » phuong danh, phuong doan, huong dan
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
cap phan » cac phan, cao phan, cau phan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
cap han » cap can, cap hay, cap van

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 - thanh trung ((cap han) OR (cap phan)) phuong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh trung ((cap han) OR (cap phan)) phuong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sach - thanh trung ((cap han) OR (cap phan)) phuong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - thanh trung ((cap han) OR (cap phan)) phuong dan phan cau*.