Perhaps you should try some spelling variations:
hanh trong » hanh trang, anh trong, hinh trong
trong tuan » trong quan, trung tuan, trong tan
hieu sach » chieu sach, hieu cach, dien sach
tuan nang » luan nang, xuan nang, tuan bang
nang dong » nang song, lang dong, nang luong
thanh hoa » thanh pho
doc hieu » toc thieu, hoc thieu, hoc hien

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 sach - hanh trong tuan nang dong ((tinh toan) or (thanh hoa)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - hanh trong tuan nang dong ((tinh toan) OR (thanh hoa)) tap.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - hanh trong tuan nang dong ((tinh toan) or (thanh hoa)) tap*.