Perhaps you should try some spelling variations:
dinh viet » ninh viet, danh viet, trinh viet
su triet » su viet, su tien, ve triet
tham luc » than luc, tham nuoc, tham thuc
dua tren » dung tren
te sach » toc sach
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
va dinh » van dinh, va kinh, va tinh
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang
cua te » cua tu
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: te sach y nang x hoi. hieu va tham luc va dinh viet ((((dua tren) or (cua te))) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu va tham luc va dinh viet ((((dua tren) OR (cua te))) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu va tham luc va dinh viet ((((dua tren) or (cua te))) or (su triet))*.