Perhaps you should try some spelling variations:
thuoc sai » thuoc tai, thuoc san, thuoc sach
thanh lap » thanh san, phan lap, thanh hai
tao hoi » tao khoi, tao boi, tay hoi
lap cua » lai cua, tap cua, lam cua
duc gia » quoc gia
toc sai » toc san, toc dai, toc thai
ky dang » ky nang, ky danh
ky sang » ky nang, ky tang, duy sang
hieu v » hieu va, hieu ve, hieu 2
v pham » vi pham, d pham
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) OR (ky dang)) tao hoi. hieu v 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) OR (ky dang)) tao hoi. hieu v 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) OR (ky dang)) tao hoi. hieu v pham duc gia thanh lap cua te".
• Adding a wildcard symbol may retrieve word variants: ((toc sai) or (thuoc sai)) ((ky sang) OR (ky dang)) tao hoi. hieu v pham duc gia thanh lap cua te*.