Perhaps you should try some spelling variations:
van cham » van chat, van tham, van pham
sach ky » sac ky, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
cu tren » tu tren, dua tren
soc va » hoc va, loc va, doc va
vi cu » vi su, vi xu, vi du

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