Perhaps you should try some spelling variations:
nang tai » hang tai, nang cao, dung tai
hanh vai » hanh vi, hanh va, hanh tai
sang tai » hang tai, sang tao, sang than
tang tai » hang tai, dung tai, sang tao
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc va
su cac » tu cac, su cao, su can

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

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