Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
sach kem » hanh kem
van cham » van chat, van tham, van pham
va cham » va chat, va tham
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
soc va » hoc va, loc va, doc va
va dau » va dao

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 kem) or (sach y)) lang xa hoi. hieu ((van cham) or (va cham)) soc va hanh va dau tieng~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach kem) OR (sach y)) lang xa hoi. hieu ((van cham) OR (va cham)) soc va hanh va dau tieng.
• Adding a wildcard symbol may retrieve word variants: te ((sach kem) or (sach y)) lang xa hoi. hieu ((van cham) or (va cham)) soc va hanh va dau tieng*.