Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
dua tren » dung tren
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
y lang » _ lang, tay lang, yen lang
xuc va » duc va, tuc va, luc va
o lang » hoa lang, hoi lang

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 ((y lang) OR (o lang)) xa hoi. hieu ve chat xuc va hanh tai ((dua tren) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y lang) OR (o lang)) xa hoi. hieu ve chat xuc va hanh tai ((dua tren) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y lang) OR (o lang)) xa hoi. hieu ve chat xuc va hanh tai ((dua tren) or (cua tre))*".