Perhaps you should try some spelling variations:
dang tay » dang xay, dung tay, dan tay
can thuc » dan thuc, van thuc, cay thuc
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
tu sach » thu sach, su sach, te sach
tay hoi » tay ho, tao hoi, tay thai
hieu va » lieu va, hieu qua
hanh ve » hanh vi, hanh va, hanh kem
cua tuc » cua duc, cua thuoc, luat tuc
sach o » sach lo, sac o, sach y
o dang » xo dang, do dang, so dang
va can » va chan, va cac, va cao
cua tu » cua su, cua cu, cua te

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach o dang tay hoi. hieu va can thuc dan hanh ve ((cua tu) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach o dang tay hoi. hieu va can thuc dan hanh ve ((cua tu) OR (cua tuc)).
• Adding a wildcard symbol may retrieve word variants: tu sach o dang tay hoi. hieu va can thuc dan hanh ve ((cua tu) or (cua tuc))*.