Perhaps you should try some spelling variations:
te sach » toc sach
ky lang » ky dang, ky tang, tay lang
van hoi » van hoa, van hoc, van hoe
qua hai » qua hoat
hanh di » hanh vi, hanh de, hang di
xuc va » tuc va, luc va, xac va
di cua » dai cua, doi cua, de cua
cua su » qua su

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 ((ky lang) or (ky nang)) van hoi. hieu qua hai ((xuc va) or (duc va)) hanh di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (ky nang)) van hoi. hieu qua hai ((xuc va) OR (duc va)) hanh di cua su.
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) or (ky nang)) van hoi. hieu qua hai ((xuc va) or (duc va)) hanh di cua su*.