Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh hai » thanh phan, thanh hoa, thanh san
cau tren » cu tren, dau tren, ca tren
xa thanh » va thanh, ha thanh, ta thanh
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ty lang xa hoi. hieu ((ve cam) OR (ve cac)) tuc xa thanh hai ((cau tren) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty lang xa hoi. hieu ((ve cam) OR (ve cac)) tuc xa thanh hai ((cau tren) OR (cua tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty lang xa hoi. hieu ((ve cam) OR (ve cac)) tuc xa thanh hai ((cau tren) or (cua tre))*".