Perhaps you should try some spelling variations:
giai thanh » gia thanh, gian thanh, giay thanh
thuc giai » thuoc giao, hoc giai, thuc thai
cau thuc » cau truc, cuu thuc, can thuc
lang van » dang van, tang van, hoang van
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
van hoi » van hoa, van hoc, van hoe
ty lang » tay lang, ty xang, ty hang
te sach » toc sach
ve cau » ke cau, va cau, ve cac
vi cau » va cau, viet cau
di cau » da cau, diem cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty lang van hoi. hieu ve cau thuc giai thanh ((vi cau) or (di cau)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty lang van hoi. hieu ve cau thuc giai thanh ((vi cau) OR (di cau)) treo.
• Adding a wildcard symbol may retrieve word variants: te sach ty lang van hoi. hieu ve cau thuc giai thanh ((vi cau) or (di cau)) treo*.