Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
cac cong » cua cong
thai cua » than cua, tai cuc, tri cua
thu cac » tu cac, thu xac, thu cuc
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va
cong va » dong va, cong ha, cong tac
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet

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

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