Perhaps you should try some spelling variations:
thanh dinh » thanh binh, thanh tinh, thanh vinh
hanh dinh » hinh dinh, hanh tinh, anh dinh
nam sua » nam cua, nam suu, nam mua
hieu ha » hieu hoa, hieu va, hieu ca
sach ty » sach tu, sach thu, xach tay
cuu tre » cua tre, cau tren, cau treo
sua va » suat va, vua va, xua va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach y) or (sach ty)) nang x hoi. hieu ha nam sua va ((hanh dinh) OR (thanh dinh)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach y) OR (sach ty)) nang x hoi. hieu ha nam sua va ((hanh dinh) OR (thanh dinh)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach y) or (sach ty)) nang x hoi. hieu ha nam sua va ((hanh dinh) OR (thanh dinh)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach y) or (sach ty)) nang x hoi. hieu ha nam sua va ((hanh dinh) OR (thanh dinh)) cuu tre*.