Perhaps you should try some spelling variations:
cau thuc » cau truc, cuu thuc, can thuc
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau
vi cau » di cau, viet cau
ve cau » ke cau, ve cac, le 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 sach y nang xa hoi. lieu va cau thuc van hanh ((vi cau) OR (ve cau)) tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang xa hoi. lieu va cau thuc van hanh ((vi cau) OR (ve cau)) tren".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. lieu va cau thuc van hanh ((vi cau) OR (ve cau)) tren*.