Perhaps you should try some spelling variations:
tham lang » nham nang, pham hang, thai bang
tay tang » tay lang, tay trung, tay quang
hieu van » thien van, lieu va, hieu ve
cua viet » ca viet, hoa viet, cua vat
tu xach » tu cach, tu hach, tu sach
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu xach ((tham lang) OR (tay tang)) xa hoi. ((hieu van) OR (hieu va)) pham duc va danh vi cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu xach ((tham lang) or (tay tang)) xa hoi. ((hieu van) OR (hieu va)) pham duc va danh vi cua viet~".
• Adding a wildcard symbol may retrieve word variants: tu xach ((tham lang) or (tay tang)) xa hoi. ((hieu van) OR (hieu va)) pham duc va danh vi cua viet*.