Perhaps you should try some spelling variations:
dau tren » dau tien, dat tren, dau tieng
hanh van » thanh van, khanh van, hanh va
hanh vai » hanh va, hanh tai, hanh voi
cham xuc » cam xuc, chat xuc, cham soc
sang dai » sang tai, lang dai, sang mai
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky sang dai hoi. hieu ve cham xuc va ((((hanh vai) or (hanh van))) or (hanh vi)) dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang dai hoi. hieu ve cham xuc va ((((hanh vai) OR (hanh van))) OR (hanh vi)) dau tren.
• Adding a wildcard symbol may retrieve word variants: su sach ky sang dai hoi. hieu ve cham xuc va ((((hanh vai) or (hanh van))) or (hanh vi)) dau tren*.