Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
cua cau » cua cac, cua chu, cua cay
ve cam » ve cham, ve cac, va cam
cua cu » cua chu, cua su, cua co

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)) tu nang xa hoi. hieu ve cam xuc van hanh vai ((cua cu) OR (cua cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu nang xa hoi. hieu ve cam xuc van hanh vai ((cua cu) OR (cua cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) tu nang xa hoi. hieu ve cam xuc van hanh vai ((cua cu) OR (cua cau))".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) tu nang xa hoi. hieu ve cam xuc van hanh vai ((cua cu) OR (cua cau))*.