Perhaps you should try some spelling variations:
hanh lam » thanh lap, hanh kem, hanh va
cham duc » pham duc, cham soc, pham duy
cua tre » cuu tre, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
sach ty » sach y, sach thu, xach tay
tang ma » mang may, tang van
sach tu » sach thu, cach tu, sach uu
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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) OR (sach tu)) tang ma hoi. hieu vu cham duc va hanh lam ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach tu)) tang ma hoi. hieu vu cham duc va hanh lam ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach tu)) tang ma hoi. hieu vu cham duc va hanh lam ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach tu)) tang ma hoi. hieu vu cham duc va hanh lam ((cua tre) or (cua te))*.