Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
va triet » va thiet, va trien, ve triet
va thanh » gia thanh, ban thanh, va tinh
sach nay » sach hay, sach vay, sach nang
sach tay » xach tay, sach hay, sach tai
lang xa » lang ha, dang xay, lang van
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
hai va » hai van, thai va, hoi va
ve cai » va cai, ve cac, ve tai

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 tay) or (sach nay)) lang xa hoi. hieu ((ve cai) or (va cam)) xuc va thanh hai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tay) OR (sach nay)) lang xa hoi. hieu ((ve cai) OR (va cam)) xuc va thanh hai va triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach tay) or (sach nay)) lang xa hoi. hieu ((ve cai) or (va cam)) xuc va thanh hai va triet*.