Perhaps you should try some spelling variations:
thi cham » thi hai, toc cham, thi ha
va hanh » van hanh, va thanh, va danh
tu cham » toc cham
sach ty » sach y, sach thu, xach tay
tang ma » mang may, tang van
sach tu » sach thu, cach tu, sach uu
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

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