Perhaps you should try some spelling variations:
cau thuc » cau truc, cuu thuc, can thuc
vat danh » va danh, van danh, luat danh
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
danh li » dan li, danh di, dinh li
ca tren » cau tren, cu tren, la tren
sinh y » sinh ly
y lang » o lang, _ lang, tay lang
va cau » van cau, va cac, va dau
li ca » ly ca

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh y lang xa hoi. hieu va cau thuc vat danh li ca tren~.
• Adding a wildcard symbol may retrieve word variants: hoc sinh y lang xa hoi. hieu va cau thuc vat danh li ca tren*.