Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
tinh bai » tinh bac, tinh hai, hinh bai
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
truc va » thuc va, thuc vat, trung va
cua tre » cua te, cuu tre, cua triet

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 ky nang xa hoi. hieu ve chat ((truc va) or (duc va)) tinh bai ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang xa hoi. hieu ve chat ((truc va) OR (duc va)) tinh bai ((cua tre) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang xa hoi. hieu ve chat ((truc va) or (duc va)) tinh bai ((cua tre) or (su triet))*.