Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
cau thuc » cau truc, cuu thuc, can thuc
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
va cau » van cau, va cac, va dau
vi cau » ve cau, viet cau
di cau » da cau, diem cau

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 y nang ma hoi. lieu va cau thuc van hanh ((vi cau) OR (di cau)) tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach y nang ma hoi. lieu va cau thuc van hanh ((vi cau) OR (di cau)) tren".
• Adding a wildcard symbol may retrieve word variants: vu khach y nang ma hoi. lieu va cau thuc van hanh ((vi cau) OR (di cau)) tren*.