Perhaps you should try some spelling variations:
sang dai » sang tai, lang dai, sang mai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky dang, ky tang
dai hoi » dai hoc, dai hai, dai moi
xuc van » duc van, luc van, xuc ban
ve cac » va cac, vien cac
vi cua » vai cua, di cua
tu sac » tu cac, tu san, tu bac
ve cai » va cai, ve tai, ve cau
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 sac) or (tu sach)) ky sang dai hoi. hieu ((ve cai) or (ve cac)) xuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky sang dai hoi. hieu ((ve cai) OR (ve cac)) xuc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky sang dai hoi. hieu ((ve cai) or (ve cac)) xuc van hanh vi cua te*.