Perhaps you should try some spelling variations:
dua tren » dung tren
minh tai » hinh tai, minh tri, dinh tai
cuu tre » cua tre, cau tren, cau treo
duc van » duc va, duc tan, duc manh
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cam » ve cham, ve cac, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky ((nang xa) OR (nang ma)) hoi. hieu ve cam duc van minh tai ((dua tren) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky ((nang xa) OR (nang ma)) hoi. hieu ve cam duc van minh tai ((dua tren) or (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: su sai ky ((nang xa) OR (nang ma)) hoi. hieu ve cam duc van minh tai ((dua tren) or (cuu tre))*.