Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hanh vai » hanh vi, hanh tai, hanh van
cham xuc » cam xuc, chat xuc, cham soc
lang hai » lang chai, lang thai, lang ha
hanh va » hang va, hanh vi
hieu ve » hieu va, hieu van
tu sach » thu sach, te sach, tu cach
hai hoi » dai hoi, hai moi, hai hai
ky lang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
ve cham » va cham, ve chat, vu cham
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: ((tu sach) OR (su sach)) ky lang hai hoi. hieu ve cham xuc va ((hanh vai) or (hanh va)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky lang hai hoi. hieu ve cham xuc va ((hanh vai) OR (hanh va)) cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky lang hai hoi. hieu ve cham xuc va ((hanh vai) or (hanh va)) cau tren*".