Perhaps you should try some spelling variations:
te sach » toc sach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
hieu va » lieu va
mai hoi » mai khoi, dai hoi, lai hoi
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
cam tu » cam thu, nam tu, dam tu
ma hoi » xa hoi, ma hoa, me hoi
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((ma hoi) OR (mai hoi)). ((hieu va) or (hieu qua)) cam tu va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((ma hoi) OR (mai hoi)). ((hieu va) OR (hieu qua)) cam tu va hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((ma hoi) OR (mai hoi)). ((hieu va) or (hieu qua)) cam tu va hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) OR (mai hoi)). ((hieu va) or (hieu qua)) cam tu va hanh di cua tre*.