Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
hanh lai » hanh lam, hanh tai, thanh loi
tang dan » tang van, tung dan, tang luan
tu sach » thu sach, su sach, te sach
ky tang » ky nang, ky dang, kho tang
dan hoi » dan hoc, dai hoi, van hoi
hieu vu » hieu va, hieu ve, hieu su
sach ky » sac ky, sach y, sach ty
truc va » thuc va, thuc vat, trung va
cua te » cua tu
tuc va » thuc va, tuc xa, duc va
vu cao » cu cao, va cao

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 ky tang dan hoi. hieu vu cao ((tuc va) or (truc va)) ((hanh lai) OR (thanh lap)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang dan hoi. hieu vu cao ((tuc va) OR (truc va)) ((hanh lai) OR (thanh lap)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang dan hoi. hieu vu cao ((tuc va) or (truc va)) ((hanh lai) OR (thanh lap)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang dan hoi. hieu vu cao ((tuc va) or (truc va)) ((hanh lai) OR (thanh lap)) cua te*.