Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
cau tren » cu tren, dau tren, ca tren
dinh thi » dinh tri
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
su sai » su tai, su hai, su dai
ve cac » va cac, vien cac
sai ky » sac 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: su sai ky tang xa hoi. hieu ((va cam) or (ve cac)) duc tan ((hanh thai) or (dinh thi)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky tang xa hoi. hieu ((va cam) OR (ve cac)) duc tan ((hanh thai) OR (dinh thi)) cau tren.
• Adding a wildcard symbol may retrieve word variants: su sai ky tang xa hoi. hieu ((va cam) or (ve cac)) duc tan ((hanh thai) or (dinh thi)) cau tren*.