Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thuoc sai » thuoc tai, thuoc san, thuoc sach
sang tao » hang tai
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
va thanh » gia thanh, va tinh, le thanh
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
lai cua » dai cua, hai cua, lai chau
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: thuoc sai ky sang tao hoi. hieu van pham duc ((va thanh) OR (ban thanh)) lai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sai ky sang tao hoi. hieu van pham duc ((va thanh) OR (ban thanh)) lai cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sai ky sang tao hoi. hieu van pham duc ((va thanh) OR (ban thanh)) lai cua te*.