Perhaps you should try some spelling variations:
tieu sach » chieu sach, dien sach, te sach
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tap » cuong tap, cong tac, cong tan
toan cao » toan tap
toan ban » van ban

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

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