Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
thanh vi » hanh vi, thanh va, thanh ve
ky tang » ky nang, ky dang, kho tang
dai hoi » dai hoc, dai hai, dai moi
su sac » su sach, su cac, su xac
tuc va » thuc va, truc va, duc va
vi hoa » voi hoa, vi hoc, va hoa
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
ve cam » ve cham, va cam, ve cai

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

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