Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, xuc ban
cua tu » cua tuc, cua cu, cua te
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 nang cao hoi. ((hieu ve) or (hieu van)) cac xuc van hanh vi ((cua tu) OR (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoi. ((hieu ve) OR (hieu van)) cac xuc van hanh vi ((cua tu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang cao hoi. ((hieu ve) or (hieu van)) cac xuc van hanh vi ((cua tu) OR (cua su))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoi. ((hieu ve) or (hieu van)) cac xuc van hanh vi ((cua tu) OR (cua su))*.