Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
quoc lan » quoc ban, nuoc luan, quoc quan
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
anh di » danh di, xanh di, anh d
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang o hai. hieu va cam ((xuc ban) or (quoc lan)) anh di ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang o hai. hieu va cam ((xuc ban) OR (quoc lan)) anh di ((cua triet) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang o hai. hieu va cam ((xuc ban) or (quoc lan)) anh di ((cua triet) or (cuu tre))*.