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 hoc » sinh hoc, tin hoc, hinh hoc
dinh lam » dinh van
tinh lao » tinh nam, tinh va
tinh doi » trinh doc, trinh do, tinh da
tinh dia » trinh dia, tinh gia, tinh da
dat tinh » dac tinh, dao tinh, sat tinh
tinh son » tinh toan, dinh so, anh son
tu sach » thu sach, su sach, te sach
va cong » tai cong, cua cong
hoc gia » hoc giao, hoc giai, toc gia
de giai » dan giai, kem giai
danh de » hanh de, dan de, dang de
tu dat » tu bat
dia va » gia va, da va
tu sat » tu bat, tu hat, tu san
tu dao » tu do, te dao, tu dau
tu may » tu ma, ty may, tu cay

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 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) OR (dinh lam)) va cong ))))) or ( tu may tinh hoc gia cong ))))~.
• 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) OR (dinh lam)) va cong ))))) OR ( tu may tinh hoc gia cong ))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( 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) OR (dinh lam)) va cong ))))) or ( tu may tinh hoc gia cong ))))*".