Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
toc sach » hoc sach, doc sach, thuoc sach
thi nang » thi cong, ki nang, thi hanh
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
cac xuc » cam xuc, chat xuc, cac cuoc
di cua » dai cua, doi cua, de cua
cua cu » cua chu, cua cau, cua 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) OR (toc sach)) thi nang xa hoi. hieu ve ((cac xuc) or (cac nuoc)) van hanh di cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) thi nang xa hoi. hieu ve ((cac xuc) OR (cac nuoc)) van hanh di cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) thi nang xa hoi. hieu ve ((cac xuc) or (cac nuoc)) van hanh di cua cu".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) thi nang xa hoi. hieu ve ((cac xuc) or (cac nuoc)) van hanh di cua cu*.