Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
hoc sach » hoc sinh, hoc cac, hoc anh
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
xuc van » duc van, luc van, vuc van
ve cai » va cai, ve tai, ve cau
ve cac » va cac, vien cac
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (hoc sach)) ky lang xa hoi. hieu ((ve cai) or (ve cac)) xuc van hanh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (hoc sach)) ky lang xa hoi. hieu ((ve cai) OR (ve cac)) xuc van hanh dai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (hoc sach)) ky lang xa hoi. hieu ((ve cai) or (ve cac)) xuc van hanh dai cua tu*.