Perhaps you should try some spelling variations:
thanh ca » thanh cha, thanh cac, thanh ha
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
ca cua » co cua
tu sac » tu sach, tu cac, tu san
xuc va » duc va, tuc va, xac va
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 ((nang xa) or (nang ma)) hoi. hieu ve cam ((xuc va) or (luc va)) thanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang xa) OR (nang ma)) hoi. hieu ve cam ((xuc va) OR (luc va)) thanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang xa) or (nang ma)) hoi. hieu ve cam ((xuc va) or (luc va)) thanh ca cua tre*.