Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
cau tuc » cau truc, cau tu, cau luc
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
sach tu » sach thu, cach tu, sach ty
va cau » van cau, va cac, va dau
tuc va » thuc va, truc va, tuc xa

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) or (sach tu)) ((lang xa) or (nang x)) hoi. lieu va cau tuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach tu)) ((lang xa) OR (nang x)) hoi. lieu va cau tuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach tu)) ((lang xa) or (nang x)) hoi. lieu va cau tuc va hanh dai cua tre*.