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

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

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