Perhaps you should try some spelling variations:
sang dai » sang tai, lang dai, sang mai
phat xuc » chat xuc, phat xuat, phap xu
su phat » su pham, tu phat, xu phat
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
ky sang » ky nang, ky dang, ky tang
dai hoi » dai hoc, dai hai, dai moi
hieu su » hieu sau, tieu su, hieu so
vi cua » vai cua, di cua
tu sai » tu bai, tu san, tu cai
tu bat » tu ban, tu dat
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) or (tu bat)) ky sang dai hoi. hieu su phat xuc ((va hanh) OR (va danh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sai) OR (tu bat)) ky sang dai hoi. hieu su phat xuc ((va hanh) OR (va danh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sai) or (tu bat)) ky sang dai hoi. hieu su phat xuc ((va hanh) OR (va danh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sai) or (tu bat)) ky sang dai hoi. hieu su phat xuc ((va hanh) OR (va danh)) vi cua te*.