Perhaps you should try some spelling variations:
thien van » thi van
van tham » van thanh, van tuan, van chat
tham duc » pham duc, tham du, than duc
ban hanh » ban hang
hanh lai » hanh lam, hanh tai, thanh lap
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
duc ban » duc tan, duc van, dua ban
lai cua » dai cua, hai cua, lai chau
cua tuc » cua duc, cua tu, cua thuoc
su sac » su sach, su xac
su cac » tu cac, su cao, su can

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) or (su cac)) ky dang ha noi. thien van tham duc ban hanh lai cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su cac)) ky dang ha noi. thien van tham duc ban hanh lai cua tuc.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky dang ha noi. thien van tham duc ban hanh lai cua tuc*.