Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
ky tang » ky nang, ky dang, kho tang
dai moi » doi moi, dai hoi
hieu su » hieu sau, tieu su, hieu so
cao xuc » cam xuc, cao duc, cao suc
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu san, tu bac
su cao » cu cao, vu cao, su co
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua te
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: ((tu sac) or (tu cac)) ky tang dai moi. hieu su cao xuc va hanh vi ((cua tu) OR (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky tang dai moi. hieu su cao xuc va hanh vi ((cua tu) OR (cua cu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu cac)) ky tang dai moi. hieu su cao xuc va hanh vi ((cua tu) OR (cua cu))".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu cac)) ky tang dai moi. hieu su cao xuc va hanh vi ((cua tu) OR (cua cu))*.