Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
tang ma » mang may, tang van
va cham » va chat, va tham
vu cham » vu kham, tu cham, qua cham
y tang » ky tang, 6 tang, 7 tang
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 y tang ma hoa. hieu ((va cham) or (vu cham)) thuc dan hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y tang ma hoa. hieu ((va cham) OR (vu cham)) thuc dan hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: thuat sach y tang ma hoa. hieu ((va cham) or (vu cham)) thuc dan hanh vi cua te*.