Perhaps you should try some spelling variations:
day thanh » dao thanh, dat thanh, da thanh
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
cam thuc » am thuc, nam thuc, cam thu
doi cua » dai cua, hoi cua
ha manh » ho manh, ha anh, ha thanh
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
di cua » dai cua, de cua, do 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 khach ky nang x hoi. hieu va cam thuc ((ha manh) or (day thanh)) ((di cua) or (doi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang x hoi. hieu va cam thuc ((ha manh) OR (day thanh)) ((di cua) OR (doi cua)) tre.
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang x hoi. hieu va cam thuc ((ha manh) or (day thanh)) ((di cua) or (doi cua)) tre*.