Perhaps you should try some spelling variations:
ve triet » va trien, su triet
tru nang » tra nang, tri nang, truc nano
cham duc » pham duc, cham soc, pham duy
va dinh » van dinh, va kinh, va tinh
va danh » va dan, va hanh, dia danh
tu sach » thu sach, su sach, te sach
tu cham » toc cham, thi cham
da nang » cam nang, kha nang, cao nang
hieu tu » chieu tu, hieu tuc, hien tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tru nang) OR (da nang)) xa hoi. hieu tu cham duc ((va danh) OR (va dinh)) de ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tru nang) or (da nang)) xa hoi. hieu tu cham duc ((va danh) OR (va dinh)) de ve triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tru nang) or (da nang)) xa hoi. hieu tu cham duc ((va danh) OR (va dinh)) de ve triet*.