Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
tieu sach » chieu sach, dien sach, te sach
ganh nang » anh nang, nganh nong, van nang
anh tang » anh bang, anh dang, anh nang
dan tai » van tai, dan thi, han tai
tai cao » thai cao, tao cao, tai sao

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: theo tieu sach - ((anh tang) OR (ganh nang)) cua ((nhung cong) OR (thong cong)) dan tai cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - ((anh tang) or (ganh nang)) cua ((nhung cong) OR (thong cong)) dan tai cao~".
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((anh tang) or (ganh nang)) cua ((nhung cong) OR (thong cong)) dan tai cao*.