Perhaps you should try some spelling variations:
dao thanh » tro thanh, de thanh, ha thanh
ban thanh » ban hanh, ban hang
cam thuc » am thuc, nam thuc, cam thu
cac nhan » ca nhan, cac nha, cam nhan
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua
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 sac ky nang x hoi. lieu va cam thuc ((((dao thanh) OR (ban thanh))) or (cac nhan)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang x hoi. lieu va cam thuc ((((dao thanh) OR (ban thanh))) OR (cac nhan)) di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang x hoi. lieu va cam thuc ((((dao thanh) OR (ban thanh))) or (cac nhan)) di cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang x hoi. lieu va cam thuc ((((dao thanh) OR (ban thanh))) or (cac nhan)) di cua tre*.