Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
12 truong » a2 truong, g2 truong, h2 truong
thpt phan » thuat phan, thpt thang, thpt dan
doc hieu » hoc thieu, hoc hien
thang 12 » thang 01, thang 50, thang 8
phan tan » phan van, phan tap, phan lan
tan lap » toan lap, dan lap, tai lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (toc thieu)) sach - nhanh thang 12 truong thpt phan tan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) sach - nhanh thang 12 truong thpt phan tan lap".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) sach - nhanh thang 12 truong thpt phan tan lap*.