Perhaps you should try some spelling variations:
cau thuc » cau truc, cuu thuc, can thuc
vat hanh » vat thanh, van hanh, va hanh
sinh ky » sinh ly, sinh y, kinh ky
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ca tren » cau tren, cu tren, la tren
ve cau » ke cau, va cau, ve cac
vi ca » vit ca, li ca, va 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 ky lang xa hoi. hieu ve cau thuc vat hanh vi ca tren~.
• Adding a wildcard symbol may retrieve word variants: hoc sinh ky lang xa hoi. hieu ve cau thuc vat hanh vi ca tren*.