Perhaps you should try some spelling variations:
dau tren » dau tien, dat tren, dau tieng
van nhan » van phan, van thanh, danh nhan
hieu van » hieu va, thien van, lieu va
nhan luc » nang luc
lang van » dang van, tang van, hoang van
van hoe » van hoa, van hoc, van hieu
ky lang » ky nang, ky dang, ky tang
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
te sach » toc sach
va dau » va dao

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 ky lang van hoe. hieu van nhan luc ((va danh) or (va hanh)) va dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang van hoe. hieu van nhan luc ((va danh) OR (va hanh)) va dau tren.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang van hoe. hieu van nhan luc ((va danh) or (va hanh)) va dau tren*.