Perhaps you should try some spelling variations:
giai tuong » giai thuong, gia tuong, gian muong
sach danh » sach tranh, sach dao, sach dung
gia cong » cua cong
tinh son » tinh toan, dinh so, anh son
tinh hoc » sinh hoc, tin hoc, hinh hoc
tinh lao » dinh lam, tinh nam, tinh va
dao tinh » dac tinh, dao minh, dao dinh
tinh dia » trinh dia, tinh gia, tinh da
tinh doi » trinh doc, trinh do, tinh da
dat tinh » dac tinh, sat tinh, dam tinh
va cong » tai cong, cua cong
tu sach » thu sach, su sach, te sach
de giai » dan giai, kem giai
danh de » hanh de, dan de, dang de
hoc gia » hoc giao, hoc giai, toc gia
tu dat » tu bat
tu sat » tu bat, tu hat, tu san
dia va » gia va, da va
tu dao » tu do, te dao, tu dau
lao va » tao va, cao va, bao va
tu may » tu ma, ty may, tu cay

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: (( tu sach danh de giai tuong ) OR ((((( tu sat ((tinh doi) OR (tinh son)) gia cong ) OR ((( tu dat tinh dia va cong ) OR ( tu dao tinh lao va cong ))))) OR ( tu may tinh hoc gia cong ))))~.
• Adding a wildcard symbol may retrieve word variants: (( tu sach danh de giai tuong ) or ((((( tu sat ((tinh doi) or (tinh son)) gia cong ) or ((( tu dat tinh dia va cong ) or ( tu dao tinh lao va cong ))))) or ( tu may tinh hoc gia cong ))))*.