Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cau tren » cu tren, dau tren, ca tren
hanh tai » hang tai, han tai, hinh tai
dang xay » dang van, van xay
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky dang xay hoi. hieu ((va cam) or (va phat)) duc va ((hanh tai) OR (thanh tai)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky dang xay hoi. hieu ((va cam) OR (va phat)) duc va ((hanh tai) OR (thanh tai)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky dang xay hoi. hieu ((va cam) or (va phat)) duc va ((hanh tai) OR (thanh tai)) cau tren".
• Adding a wildcard symbol may retrieve word variants: te sac ky dang xay hoi. hieu ((va cam) or (va phat)) duc va ((hanh tai) OR (thanh tai)) cau tren*.