Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, cam xuc, chao xu
doc sach » hoc sach, toc sach, nuoc sach
thu hang » thuc hanh, thu huong, thu trang
thi hang » thi hanh, thi nang, thi hong
ve chat » va chat, van chat
xuc van » duc van, luc van, vuc van
doi cua » dai cua, hoi cua
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach ((thu hang) OR (thi hang)) xa hoi. hieu ve chat xuc van hanh ((vi cua) or (doi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ((thu hang) OR (thi hang)) xa hoi. hieu ve chat xuc van hanh ((vi cua) OR (doi cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ((thu hang) OR (thi hang)) xa hoi. hieu ve chat xuc van hanh ((vi cua) or (doi cua)) triet".
• Adding a wildcard symbol may retrieve word variants: doc sach ((thu hang) OR (thi hang)) xa hoi. hieu ve chat xuc van hanh ((vi cua) or (doi cua)) triet*.