Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh hai » thanh hai, nhanh hai, hang hai
ban hanh » ban hang
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
duc ban » duc tan, duc van, dua ban
tu san » thu san, tu ban, tu can
anh ta » anh tu, anh va, anh tuan
ky anh » ky danh, ly anh, ty anh
va cam » va cham, va cac, va cao
ta ho » tay ho, tam ho, ta hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu cac)) ky anh ta ho. hieu va cam duc ban hanh hai ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu cac)) ky anh ta ho. hieu va cam duc ban hanh hai ((cua tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu cac)) ky anh ta ho. hieu va cam duc ban hanh hai ((cua tre) or (cua viet))*.