Perhaps you should try some spelling variations:
sach tay » xach tay, sach hay, sach nay
tay tang » tay lang, tay trung, tay quang
dua tren » dung tren
manh hai » lanh hai, minh hai, thanh hai
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
xuc ban » duc ban, cuc ban, quoc ban
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tay tang xa hoi. hieu va cac ((xuc van) or (xuc ban)) manh hai ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tay tang xa hoi. hieu va cac ((xuc van) OR (xuc ban)) manh hai ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach tay tang xa hoi. hieu va cac ((xuc van) or (xuc ban)) manh hai ((dua tren) or (cuu tre))*.