Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
hieu van » hieu va, thien van, lieu va
van nang » van quang, van ban, van dong
thai cua » tai cuc, tri cua, dai cua
than cua » nhan cua, ban cua, gian cua
van dat » van dao, van dau, dan dat
va dang » van dang, va nang, va lang
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, x ho
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: thuat sac ky nang x hoi. hieu van dat nuoc ((va dang) or (van nang)) ((thai cua) or (than cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang x hoi. hieu van dat nuoc ((va dang) OR (van nang)) ((thai cua) OR (than cua)) te.
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang x hoi. hieu van dat nuoc ((va dang) or (van nang)) ((thai cua) or (than cua)) te*.