Perhaps you should try some spelling variations:
te sach » toc sach
ty nang » ty xang, ty hang, ly nang
hieu ve » hieu van
hieu va » lieu va, hieu qua
du hanh » dieu hanh, duy khanh, luu hanh
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
cua te » cua tu
truc » thuc

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) or (ky nang)) xa hoi. ((hieu ve) or (hieu va)) cau truc du hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ky nang)) xa hoi. ((hieu ve) OR (hieu va)) cau truc du hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ky nang)) xa hoi. ((hieu ve) or (hieu va)) cau truc du hanh di cua te*.