Perhaps you should try some spelling variations:
dang hanh » dang thanh, ban hanh, dang van
day thanh » dao thanh, dat thanh, da thanh
cam thuc » am thuc, nam thuc, cam thu
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao
di cuu » di cau, di cua, dinh cuu
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu va cam thuc ((dang hanh) or (day thanh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu va cam thuc ((dang hanh) OR (day thanh)) di cuu tre.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu va cam thuc ((dang hanh) or (day thanh)) di cuu tre*.