Perhaps you should try some spelling variations:
can cau » van cau, ban cau, ca cau
cac cau » cac mau, bac cau, ca cau
tu sach » thu sach, su sach, te sach
cao hoc » co hoc, cho hoc, chat hoc
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang cao hoc. hieu ((ve cam) or (ve cac)) tuc va dan ((cac cau) or (can cau)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang cao hoc. hieu ((ve cam) OR (ve cac)) tuc va dan ((cac cau) OR (can cau)) tren.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang cao hoc. hieu ((ve cam) or (ve cac)) tuc va dan ((cac cau) or (can cau)) tren*.