Perhaps you should try some spelling variations:
ban xanh » ban hanh, ban anh, ban banh
tu sang » thu sang, tu san, tu lang
sang ky » sang kyo, dang ky, tang ky
ky sang » ky nang, ky dang, ky tang
sang xa » song xa, lang xa, sang ma
hieu ve » hieu va, hieu van
xanh di » danh di, vanh dai, xanh tai
cua tre » cua te, cuu tre, cua triet
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sang ky sang xa hoi. hieu ve ((pham duc) or (cham soc)) ban xanh di ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sang ky sang xa hoi. hieu ve ((pham duc) OR (cham soc)) ban xanh di ((cua tre) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu sang ky sang xa hoi. hieu ve ((pham duc) or (cham soc)) ban xanh di ((cua tre) or (cua tu))*.