Perhaps you should try some spelling variations:
sach tay » xach tay, sach hay, sach tai
sach nay » sach hay, sach vay, sach nang
cau tren » cu tren, ca tren, cau treo
dau tren » dau tien, dat tren, dau tieng
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach tay) OR (sach nay)) lang xa hoi. lieu va cham soc va hanh vi ((cau tren) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach tay) OR (sach nay)) lang xa hoi. lieu va cham soc va hanh vi ((cau tren) OR (dau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach tay) OR (sach nay)) lang xa hoi. lieu va cham soc va hanh vi ((cau tren) or (dau tren))".
• Adding a wildcard symbol may retrieve word variants: thu ((sach tay) OR (sach nay)) lang xa hoi. lieu va cham soc va hanh vi ((cau tren) or (dau tren))*.