Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
xuc van » duc van, luc van, xuc ban
van cam » van nam, van lam, van cau
tu sach » thu sach, te sach, tu cach
tu nang » tu nong, tu nano, tu lang
su sach » so sach, vu sach
luu tre » luu tru, cuu tre, luy tre
vi luu » vi lua

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) OR (su sach)) ((tu nang) OR (tru nang)) xa hoi. hieu van cam xuc van hanh vi luu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ((tu nang) or (tru nang)) xa hoi. hieu van cam xuc van hanh vi luu tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ((tu nang) or (tru nang)) xa hoi. hieu van cam xuc van hanh vi luu tre*.