Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
van chu » van chi, van phu, van cau
chu duc » thu duc, chua duoc, cuu duoc
duc van » duc va, duc tan, duc manh
van han » van hanh, van phan, van nhan
han tai » hang tai, nhan tai, van tai
tai cua » thai cua, tai cuc, tri cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty ((nang x) or (lang xa)) hoi. hieu van chu duc van han tai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang x) OR (lang xa)) hoi. hieu van chu duc van han tai cua su.
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang x) or (lang xa)) hoi. hieu van chu duc van han tai cua su*.