Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
sac ky » sai ky
ve cac » va cac, vien cac
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) OR (cac ky)) tang xa hoi. hieu ve cac xuc van hanh vi ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) tang xa hoi. hieu ve cac xuc van hanh vi ((cua tre) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (cac ky)) tang xa hoi. hieu ve cac xuc van hanh vi ((cua tre) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (cac ky)) tang xa hoi. hieu ve cac xuc van hanh vi ((cua tre) or (cua tu))*.