Perhaps you should try some spelling variations:
van triet » va triet, van thiet, van trieu
duoc ban » duc ban, quoc ban, buoc ban
hieu van » hieu va, thien van, lieu va
dan duoc » da duoc, dat duoc, dan quoc
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, lang xa, nang ma
van dan » van ban, ban dan, van dao
hang vi » hang va, hanh vi, khang voi
hang di » hang doi, hang dien, hang dich

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)) ky nang xa hoi. hieu van dan duoc ban ((hang vi) or (hang di)) van triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang xa hoi. hieu van dan duoc ban ((hang vi) OR (hang di)) van triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky nang xa hoi. hieu van dan duoc ban ((hang vi) or (hang di)) van triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky nang xa hoi. hieu van dan duoc ban ((hang vi) or (hang di)) van triet*.