Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
dang than » dang thanh, sang than, dang tran
tu sach » thu sach, su sach, te sach
van dat » van dao, van dau, dan dat
va dang » van dang, va nang, va lang
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu
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 sach) or (tu sach)) ky nang x hoi. thien van dat nuoc va dang than ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (tu sach)) ky nang x hoi. thien van dat nuoc va dang than ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (tu sach)) ky nang x hoi. thien van dat nuoc va dang than ((cua tre) or (cua te))*.