Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
va dam » van dam, va dao, va dau
dam tu » nam tu, cam tu, tam tu
di cau » da cau, diem cau

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 ty ((nang xa) OR (nang x)) hoi. hieu va dam tu va hanh di cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty ((nang xa) OR (nang x)) hoi. hieu va dam tu va hanh di cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) OR (nang x)) hoi. hieu va dam tu va hanh di cau tren*.