Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
cua tre » cua te, cuu tre, cua triet
nang xa » lang xa, nang ma, mang xa
tai cua » thai cua, tai cuc, tri cua
hieu va » lieu va, hieu qua
tuc va » thuc va, truc va, tuc xa
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((nang xa) or (nang x)) hoi. hieu va cam ((tuc va) or (hoc va)) hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang xa) OR (nang x)) hoi. hieu va cam ((tuc va) OR (hoc va)) hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky ((nang xa) or (nang x)) hoi. hieu va cam ((tuc va) or (hoc va)) hanh tai cua tre*.