Perhaps you should try some spelling variations:
chat duc » chat xuc, chat doc, chet duoc
su sach » so sach
sinh va » sinh vat, tinh va, dinh van
kinh va » kinh van, tinh va, minh va
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang

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) or (vu sach)) y nang xa hoi. hieu ve chat duc va ((kinh va) OR (sinh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. hieu ve chat duc va ((kinh va) OR (sinh va)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) y nang xa hoi. hieu ve chat duc va ((kinh va) OR (sinh va)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) y nang xa hoi. hieu ve chat duc va ((kinh va) OR (sinh va)) cuu tre*.