Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
sach ky » sac ky, sach y, sach kem
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
nam qua » nam quan, nam cua, nam mua
cuu tre » cau tren, cau treo
hieu ca » hieu cac, hieu cua, hieu va
sach ty » sach y, sach tu, sach thu
qua va » quan va, qua van, vua va
ca nam » cua nam, cai nam, ha nam
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: tu ((sach ky) OR (sach ty)) nang x hoi. hieu ca nam qua va hanh tai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang x hoi. hieu ca nam qua va hanh tai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) nang x hoi. hieu ca nam qua va hanh tai ((cua tre) or (cuu tre))*".