Perhaps you should try some spelling variations:
nhan tai » hang tai, van tai, toan tai
van nhan » van phan, van thanh, danh nhan
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
tai cua » thai cua, tai cuc, tri cua
ky tang » ky nang, ky dang, kho tang
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
va cam » va cham, va cac, va cao
te cac » tu cac, ve cac, te cao
ma hoi » mai hoi, xa hoi, me hoi
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te cac) or (tu san)) ky tang ((ma hoi) OR (ma hoa)). hieu va cam duc van nhan tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (tu san)) ky tang ((ma hoi) OR (ma hoa)). hieu va cam duc van nhan tai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cac) or (tu san)) ky tang ((ma hoi) OR (ma hoa)). hieu va cam duc van nhan tai cua tre*".