Perhaps you should try some spelling variations:
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
cam tu » cam thu, nam tu, dam tu
di cua » doi cua, de cua, do 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. ((hieu va) or (hieu qua)) cam tu va hanh ((di cua) OR (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. ((hieu va) OR (hieu qua)) cam tu va hanh ((di cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. ((hieu va) or (hieu qua)) cam tu va hanh ((di cua) OR (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. ((hieu va) or (hieu qua)) cam tu va hanh ((di cua) OR (dai cua)) tre*.