Perhaps you should try some spelling variations:
thanh hoa » thanh pho
thanh hai » thanh phan, thanh san
thu sach » tu sach, thuat sach, thuoc sach
cham luc » cham soc, nhan luc, cham cuu
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
luc va » duc va, tuc va, loc 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 ((ky lang) or (ky dang)) xa hoi. hieu ve cham luc va ((thanh hai) or (thanh hoa)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky lang) OR (ky dang)) xa hoi. hieu ve cham luc va ((thanh hai) OR (thanh hoa)) cau tren.
• Adding a wildcard symbol may retrieve word variants: thu sach ((ky lang) or (ky dang)) xa hoi. hieu ve cham luc va ((thanh hai) or (thanh hoa)) cau tren*.