Perhaps you should try some spelling variations:
sach tay » sach hay, sach nay, sach tai
cua viet » ca viet, hoa viet, cua dieu
xach tay » canh tay
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa
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: cuon ((sach tay) OR (xach tay)) tang ma hoi. hieu ve cam tuc va danh vi ((cua viet) or (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cuon ((sach tay) OR (xach tay)) tang ma hoi. hieu ve cam tuc va danh vi ((cua viet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "cuon ((sach tay) OR (xach tay)) tang ma hoi. hieu ve cam tuc va danh vi ((cua viet) or (cua vat))".
• Adding a wildcard symbol may retrieve word variants: cuon ((sach tay) OR (xach tay)) tang ma hoi. hieu ve cam tuc va danh vi ((cua viet) or (cua vat))*.