Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cuoc luc » coc luc, duoc lac, duoc luu
thu hang » thi hang, thu huong, thu trang
hanh hai » thanh hai, nhanh hai, hang hai
van hanh » van thanh, ban hanh, van anh
hai cua » thai cua, dai cua, hoi cua
luc van » luoc van, luu van, duc van
hieu va » hieu qua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 ((thu hang) OR (thuc hanh)) x hoi. ((hieu va) or (lieu va)) cuoc luc van hanh hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((thu hang) OR (thuc hanh)) x hoi. ((hieu va) OR (lieu va)) cuoc luc van hanh hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((thu hang) OR (thuc hanh)) x hoi. ((hieu va) or (lieu va)) cuoc luc van hanh hai cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((thu hang) OR (thuc hanh)) x hoi. ((hieu va) or (lieu va)) cuoc luc van hanh hai cua te*.