Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
dua tren » dung tren
va danh » va dinh, va dan, va hanh
cua tre » cua te, cua triet, cua thep
cuu tre » cau tren, cau treo
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
va cam » va cham, va cac, va cao
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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 lang xa hoi. hieu va cam duc va danh vai ((((cua tre) OR (dua tren))) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. hieu va cam duc va danh vai ((((cua tre) OR (dua tren))) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky lang xa hoi. hieu va cam duc va danh vai ((((cua tre) OR (dua tren))) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. hieu va cam duc va danh vai ((((cua tre) OR (dua tren))) or (cuu tre))*.