Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
huu phuc » huu thuc, huu phach, huu duc
dac dieu » dac diem, da dieu, cac dieu
dieu can » dieu hanh, tiep can, dieu cua
can treo » cau treo, tan trao, ban tre
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, dieu vu
hieu su » hieu sau, tieu su, hieu so
phuc va » phuc vu, thuc va, chuc va
va dac » va cac, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang xa hoi. ((hieu vu) OR (hieu su)) huu phuc va dac dieu can treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ky nang xa hoi. ((hieu vu) OR (hieu su)) huu phuc va dac dieu can treo".
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. ((hieu vu) OR (hieu su)) huu phuc va dac dieu can treo*.