Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
nang mai » nang ma, nang tai, lang mai
vien cac » vien bach, vien dai, vien da
thanh vi » hanh vi, thanh va, thanh ve
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang mai hoi. hieu ((ve cam) OR (vien cac)) thuc vat thanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang mai hoi. hieu ((ve cam) or (vien cac)) thuc vat thanh vi cua tre*.