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
cau tren » cu tren, dau tren, ca tren
vu sach » vu bach, su sach, vu khach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
va cau » van cau, va cac, va dau
vi cau » ve cau, di cau, viet 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) OR (lang xa)) hoi. lieu va cau thuc van hanh vi cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) OR (lang xa)) hoi. lieu va cau thuc van hanh vi cau tren".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) OR (lang xa)) hoi. lieu va cau thuc van hanh vi cau tren*.