Perhaps you should try some spelling variations:
luoc gia » quoc gia, luong gia, nuoc giai
thanh va » thanh van, hanh va, thanh ha
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
hieu ve » hieu va, hieu van
luc gia » duc gia, quoc gia, duc giao
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
va cau » van cau, va cac, va dau
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: te sach y nang x hoi. hieu ve cam ((luc gia) OR (luoc gia)) thanh va cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu ve cam ((luc gia) OR (luoc gia)) thanh va cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ve cam ((luc gia) OR (luoc gia)) thanh va cau tren*.