Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
cham xuc » cam xuc, chat xuc, cham soc
ban hanh » ban hang
va thanh » gia thanh, ban thanh, va tinh
vai cau » va cau, van cau, vai cac
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
cu lang » cua lang, xu lang, chi lang
tu lang » tu lanh, xu lang, tu quang
ve cham » va cham, ve chat, vu cham

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((tu lang) OR (cu lang)) xa hoi. hieu ve cham xuc ((va thanh) or (ban hanh)) vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((tu lang) OR (cu lang)) xa hoi. hieu ve cham xuc ((va thanh) OR (ban hanh)) vai cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((tu lang) OR (cu lang)) xa hoi. hieu ve cham xuc ((va thanh) or (ban hanh)) vai cau tren*".