Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va
va hang » van hang, va nang, va lang
hang di » hang doi, hang vi, hang dien
di cua » dai cua, doi cua, de cua
cua te » cua tu
nuoc » quoc, duoc, ngoc

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) or (vu bach)) ky nang mai hoi. ((hieu ve) or (hieu van)) dat nuoc va hang di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu bach)) ky nang mai hoi. ((hieu ve) OR (hieu van)) dat nuoc va hang di cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu bach)) ky nang mai hoi. ((hieu ve) or (hieu van)) dat nuoc va hang di cua te*.