Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh tai, hanh van
tang tai » hang tai, dung tai, sang tao
cua tre » cua te, cuu tre, cua triet
hanh va » hang va, hanh vi
cam luc » cam xuc, cau luc
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
luc va » duc va, tuc va, loc va
su sac » su sach, su cac, su xac

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 ((nang cao) or (tang tai)) roi. hieu ve cam luc va ((hanh vai) OR (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang cao) OR (tang tai)) roi. hieu ve cam luc va ((hanh vai) OR (hanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((nang cao) or (tang tai)) roi. hieu ve cam luc va ((hanh vai) OR (hanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang cao) or (tang tai)) roi. hieu ve cam luc va ((hanh vai) OR (hanh va)) cua tre*.