Perhaps you should try some spelling variations:
cao luoc » cao quoc, cao thuoc, cao luong
thanh va » thanh van, hanh va, thanh ha
tay lang » tai lang, tay tang, tay quang
luoc gia » quoc gia, luc gia, luong gia
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
y lang » o lang, _ lang, yen lang
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: te sach ((y lang) OR (tay lang)) xa hoi. hieu va cao luoc gia ((hanh vi) or (thanh va)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y lang) OR (tay lang)) xa hoi. hieu va cao luoc gia ((hanh vi) OR (thanh va)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y lang) OR (tay lang)) xa hoi. hieu va cao luoc gia ((hanh vi) or (thanh va)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y lang) OR (tay lang)) xa hoi. hieu va cao luoc gia ((hanh vi) or (thanh va)) cuu tre*.