Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
phuong dan » phuong danh, huong dan, phuong lan
hanh tang » anh tang, hanh mang, hanh tung
cua nhung » va nhung
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - ((hanh tang) or (hanh trang)) cua nhung ((phuong dan) OR (phuong doan)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((hanh tang) OR (hanh trang)) cua nhung ((phuong dan) OR (phuong doan)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((hanh tang) or (hanh trang)) cua nhung ((phuong dan) OR (phuong doan)) than cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((hanh tang) or (hanh trang)) cua nhung ((phuong dan) OR (phuong doan)) than cao*.