Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh hai » thanh hai, nhanh hai, hang hai
danh tao » danh giao, dao tao, danh cho
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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 ((danh tao) OR (doanh tai)) boi. hieu ve cam duc ban hanh hai ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((danh tao) OR (doanh tai)) boi. hieu ve cam duc ban hanh hai ((cua tre) OR (cua viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((danh tao) OR (doanh tai)) boi. hieu ve cam duc ban hanh hai ((cua tre) or (cua viet))*".