Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
tham duc » pham duc, tham du, than duc
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
tam viet » nam viet, cam viet, tam biet
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
duc van » duc va, duc tan, duc manh
lai tam » lai cam, lai nam, lai tap
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ty) or (sach tu)) nang x hoi. hieu van tham duc van hanh lai tam viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tu)) nang x hoi. hieu van tham duc van hanh lai tam viet.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach tu)) nang x hoi. hieu van tham duc van hanh lai tam viet*.