Perhaps you should try some spelling variations:
tham luc » than luc, tham nuoc, tham thuc
te sach » toc sach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
vu nang » vuc nang, va nang, vu dang
hieu va » lieu va
di cua » dai cua, doi cua, de cua
luc va » duc va, tuc va, loc va
cua te » cua tu
v nang » va nang, van nang, voi nang

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 ((v nang) or (vu nang)) xa hoi. ((hieu va) or (hieu qua)) tham luc va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (vu nang)) xa hoi. ((hieu va) OR (hieu qua)) tham luc va hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) or (vu nang)) xa hoi. ((hieu va) or (hieu qua)) tham luc va hanh di cua te*.