Perhaps you should try some spelling variations:
truong va » truong dai, truong cao, truong dao
cua triet » su triet, va triet
trung va » trang va, trung ha, trung tam
cua viet » ca viet, hoa viet, cua vat
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang xa hoi. hieu qua cam ((trung va) OR (truong va)) hanh vi ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu qua cam ((trung va) OR (truong va)) hanh vi ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang xa hoi. hieu qua cam ((trung va) OR (truong va)) hanh vi ((cua triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. hieu qua cam ((trung va) OR (truong va)) hanh vi ((cua triet) or (cua viet))*.