Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
thanh dan » thanh san, thanh van, thanh dat
thu sach » tu sach, thuat sach, thuoc sach
van cam » van nam, van lam, van cau
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, dua tren
tuc va » thuc va, truc va, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang xa hoi. thien van cam ((tuc va) or (tuc xa)) thanh dan ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. thien van cam ((tuc va) OR (tuc xa)) thanh dan ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. thien van cam ((tuc va) or (tuc xa)) thanh dan ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. thien van cam ((tuc va) or (tuc xa)) thanh dan ((cua tre) OR (cua triet))*.