Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
toc cham » toc thai
tu cham » thi cham
sach ty » sach y, sach tu, sach thu
xang ma » tang ma, nang ma, sang ma
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cuu tre » cua tre, cau treo
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty xang ma hoi. hieu ((tu cham) or (toc cham)) duc va hanh va ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang ma hoi. hieu ((tu cham) OR (toc cham)) duc va hanh va ((cuu tre) OR (cau tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang ma hoi. hieu ((tu cham) or (toc cham)) duc va hanh va ((cuu tre) OR (cau tren))*".