Perhaps you should try some spelling variations:
hieu sau » hieu su, hieu suat, hieu va
hang tai » hang va, dung tai
sang mai » sang ma, sang tai, lang mai
phat xuc » chat xuc, phat xuat, phap xu
tieu su » thieu so
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di cua
xuc va » duc va, tuc va, luc va
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky ((hang tai) or (sang mai)) hoi. ((hieu sau) OR (tieu su)) phat xuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky ((hang tai) OR (sang mai)) hoi. ((hieu sau) OR (tieu su)) phat xuc va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky ((hang tai) or (sang mai)) hoi. ((hieu sau) OR (tieu su)) phat xuc va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((hang tai) or (sang mai)) hoi. ((hieu sau) OR (tieu su)) phat xuc va hanh vi cua te*.