Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cham luc » nhan luc, cham cuu, chat lua
cau tren » cu tren, dau tren, ca tren
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va tinh » may tinh
tinh di » tinh doi, trinh di, tinh da
di cau » da cau, diem cau

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. lieu va ((cham luc) OR (cham soc)) va tinh di cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ky nang xa hoi. lieu va ((cham luc) OR (cham soc)) va tinh di cau tren".
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. lieu va ((cham luc) OR (cham soc)) va tinh di cau tren*.