Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van nhan » van phan, van thanh, danh nhan
nhan luc » nang luc
tu sach » thu sach, su sach, te sach
va danh » va dinh, va dan, dia danh
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, ban hanh
cua tuc » cua duc, cua tu, cua thuoc
sach ky » sac ky, sach y, sach ty
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang x hoi. hieu van nhan luc ((va hanh) or (va danh)) dai ((cuu tre) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu van nhan luc ((va hanh) OR (va danh)) dai ((cuu tre) OR (cua tuc)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu van nhan luc ((va hanh) or (va danh)) dai ((cuu tre) or (cua tuc))*.