Perhaps you should try some spelling variations:
dat duoc » dat nuoc, da duoc, luat duoc
vu sang » vua sang, vu dang, vu san
cuu tre » cau tren, cau treo
cua tre » cua triet, dua tren, cua thep
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
sang ky » sang kyo, dang ky, tang ky
duoc va » nuoc va, duc va, duoc ma
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
ve dat » de dat, va dat, ve dao
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sang ky tang ma hoi. hieu ve dat duoc va hanh di ((((cua tre) OR (cuu tre))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sang ky tang ma hoi. hieu ve dat duoc va hanh di ((((cua tre) OR (cuu tre))) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sang ky tang ma hoi. hieu ve dat duoc va hanh di ((((cua tre) OR (cuu tre))) or (cua te))*".