Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
va cham » va chat, va tham
vu cham » vu kham, tu cham, qua cham
vi cua » vai cua, di cua
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: thuat sach ky sang ma hoa. hieu ((va cham) or (vu cham)) thuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky sang ma hoa. hieu ((va cham) OR (vu cham)) thuc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky sang ma hoa. hieu ((va cham) or (vu cham)) thuc van hanh vi cua te*.