Perhaps you should try some spelling variations:
tro thanh » thi thanh, tai thanh
dao thanh » ban thanh, de thanh, ha thanh
day nhanh » day thanh, duy nhanh, dac nhan
cam thuc » am thuc, nam thuc, cam thu
vu sach » vu bach, su sach, vu khach
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
de cua » le cua, te cua, dieu cua

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 y nang x ho. hieu va cam thuc ((((dao thanh) or (tro thanh))) or (day nhanh)) de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang x ho. hieu va cam thuc ((((dao thanh) OR (tro thanh))) OR (day nhanh)) de cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang x ho. hieu va cam thuc ((((dao thanh) or (tro thanh))) or (day nhanh)) de cua tre*.