Perhaps you should try some spelling variations:
sinh ky » sinh ly, sinh y, kinh ky
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
hieu va » hieu qua
va hanh » van hanh, va thanh, va danh
hanh ca » hanh cac, hanh cat, hanh cua
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
ca cua » co cua

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

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