Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thanh van » thanh san, thanh phan, thanh nhan
cam luoc » cam xuc, tom luoc, cam lo
luoc gia » quoc gia, luc gia, luong gia
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
co hai » co dai, co hoi, so hai
ve cam » ve cham, ve cac, va cam
o hai » so hai, o lai, _ hai

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 ((o hai) OR (co hai)). hieu ve cam luoc gia ((thanh van) or (thanh toan)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((o hai) OR (co hai)). hieu ve cam luoc gia ((thanh van) OR (thanh toan)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((o hai) OR (co hai)). hieu ve cam luoc gia ((thanh van) or (thanh toan)) cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((o hai) OR (co hai)). hieu ve cam luoc gia ((thanh van) or (thanh toan)) cau tren*.