Perhaps you should try some spelling variations:
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
thu sach » thuat sach, thuoc sach, thu hoach
thu nang » thi nang, thu hang, thu bang
hieu van » hieu va, thien van, lieu va
tinh cuu » trinh cuu, dinh cuu, tinh cua
tu sach » su sach, te sach, tu cach
van lam » van nam
lam tuc » lam thuoc, lam truoc, luat tuc
xa hanh » xa thanh, xa khanh, va hanh
cuu tre » cua tre, cau tren, cau treo
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) thu nang ((x hoi) OR (x ho)). hieu van lam tuc xa hanh tinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) thu nang ((x hoi) OR (x ho)). hieu van lam tuc xa hanh tinh cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) thu nang ((x hoi) OR (x ho)). hieu van lam tuc xa hanh tinh cuu tre*".