Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
hieu su » hieu sau, tieu su, hieu so
ky tang » ky nang, ky dang, kho tang
dai moi » doi moi, dai hoi
xuc va » duc va, tuc va, xac va
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va
tu sac » tu sach, tu cac, tu bac
su cam » su nam, su cao, su can
tu san » thu san, tu ban, tu can
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) or (tu san)) ky tang dai moi. hieu su cam ((xuc va) OR (luc va)) hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky tang dai moi. hieu su cam ((xuc va) OR (luc va)) hanh vi cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu san)) ky tang dai moi. hieu su cam ((xuc va) OR (luc va)) hanh vi cua tu*".