Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
vu sach » vu bach, su sach, vu khach
dang xa » dang xay, lang xa, dang ha
nam xuc » nam xua, nam thuc, nam duoc
cuu tre » cua tre, cau tren, cau treo
y dang » ky dang, 2 dang, _ dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y dang xa hoi. hieu van ((nam xuc) OR (cam xuc)) va thanh vi ((cuu tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y dang xa hoi. hieu van ((nam xuc) OR (cam xuc)) va thanh vi ((cuu tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y dang xa hoi. hieu van ((nam xuc) OR (cam xuc)) va thanh vi ((cuu tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach y dang xa hoi. hieu van ((nam xuc) OR (cam xuc)) va thanh vi ((cuu tre) or (cua triet))*.