Perhaps you should try some spelling variations:
thay nuoc » tray nuoc, thoat nuoc, nha nuoc
tham nuoc » thoat nuoc, nha nuoc, pham ngoc
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
va danh » va dinh, va dan, va hanh
danh va » doanh va, hanh va, anh va
y nang » ky nang, ly nang, v nang
va hoa » van hoa, va hoc, ma hoa
x hoi » xa hoi, o hoi, x ho

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: ((hoc sach) OR (vu sach)) y nang x hoi. hieu van ((tham nuoc) OR (thay nuoc)) va danh va hoa viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) or (vu sach)) y nang x hoi. hieu van ((tham nuoc) OR (thay nuoc)) va danh va hoa viet~".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (vu sach)) y nang x hoi. hieu van ((tham nuoc) OR (thay nuoc)) va danh va hoa viet*.