Perhaps you should try some spelling variations:
chiet tach » chieu sach
nguong dan » huong dan
tuong dan » huong dan, tung dan, xuong dan
ho chiet » ho chieu, ho thiet, hoc thiet
tinh cua » trinh cua, tinh chat, tranh cua
sinh cua » manh cua, dinh cuu, sinh va
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - hanh ((tinh cua) OR (sinh cua)) nhung ((tuong dan) or (nguong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh ((tinh cua) OR (sinh cua)) nhung ((tuong dan) OR (nguong dan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - hanh ((tinh cua) OR (sinh cua)) nhung ((tuong dan) or (nguong dan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh ((tinh cua) OR (sinh cua)) nhung ((tuong dan) or (nguong dan)) toan tap*.