Perhaps you should try some spelling variations:
thien van » thi van
thuc dant » thuoc dang, thuc hanh, thuc day
nang mai » nang ma, nang tai, lang mai
thuc dan » thuc hanh, hoc dan
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang mai hoi. thien van nam ((thuc dan) or (((thuc dant) OR (thuc vat)))) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang mai hoi. thien van nam ((thuc dan) OR (((thuc dant) OR (thuc vat)))) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang mai hoi. thien van nam ((thuc dan) or (((thuc dant) OR (thuc vat)))) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang mai hoi. thien van nam ((thuc dan) or (((thuc dant) OR (thuc vat)))) hanh vi cua tre*.