Perhaps you should try some spelling variations:
hoang thai » hoang thi, hoang hai, hong thai
toc sach » hoc sach, doc sach, thuoc sach
hang hai » hoang hai, hang tai, thanh hai
cam loc » cam lo
cua tre » cua te, cuu tre, cua triet
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
loc va » hoc va, luc va
ha hoi » hoa hoi, ha noi, xa hoi
va cam » va cham, va cac, va cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky dang ha hoi. lieu va cam loc va ((hang hai) OR (hoang thai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky dang ha hoi. lieu va cam loc va ((hang hai) or (hoang thai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky dang ha hoi. lieu va cam loc va ((hang hai) or (hoang thai)) cua tre*.