Perhaps you should try some spelling variations:
thuoc sai » thuoc tai, thuoc san, thuoc sach
thanh lap » thanh san, phan lap, thanh hai
hieu van » hieu va, thien van, lieu va
sang tao » hang tai
toc sai » toc san, toc dai, toc thai
lap cua » lai cua, tap cua, lam cua
duc gia » quoc gia
hieu ve » hieu va
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky dang, ky tang
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: ((toc sai) or (thuoc sai)) ky sang tao hoi. ((hieu ve) OR (hieu van)) pham duc gia thanh lap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sai) OR (thuoc sai)) ky sang tao hoi. ((hieu ve) OR (hieu van)) pham duc gia thanh lap cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sai) or (thuoc sai)) ky sang tao hoi. ((hieu ve) OR (hieu van)) pham duc gia thanh lap cua te".
• Adding a wildcard symbol may retrieve word variants: ((toc sai) or (thuoc sai)) ky sang tao hoi. ((hieu ve) OR (hieu van)) pham duc gia thanh lap cua te*.