Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
van tuan » van quan, van ban, anh tuan
su sach » so sach, vu sach
tuan vi » quan vi, luan vi, quans vi
tu nang » tu nong, tu nano, tu lang
luu tre » cuu tre, luy tre
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
xuc van » duc van, luc van, vuc van
va cao » va cac, va co, 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: su sach ((tu nang) or (tru nang)) xa hoi. hieu va cao xuc van tuan vi ((luu tre) OR (luu tru))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((tu nang) OR (tru nang)) xa hoi. hieu va cao xuc van tuan vi ((luu tre) OR (luu tru)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((tu nang) or (tru nang)) xa hoi. hieu va cao xuc van tuan vi ((luu tre) OR (luu tru))".
• Adding a wildcard symbol may retrieve word variants: su sach ((tu nang) or (tru nang)) xa hoi. hieu va cao xuc van tuan vi ((luu tre) OR (luu tru))*.