Perhaps you should try some spelling variations:
chat huu » pham huu
hoc sach » hoc sinh, hoc cac, hoc anh
thi nang » thi cong, ki nang, thi hanh
thu nang » thu hang, thu bang, tho nang
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
ve chat » va chat, van chat
huu va » cuu va, tuu va
ca san » cac san, cua san, ca dan

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 ((thu nang) or (thi nang)) xa hoi. hieu ve chat huu va danh ((ca sau) OR (ca san)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((thu nang) OR (thi nang)) xa hoi. hieu ve chat huu va danh ((ca sau) OR (ca san)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ((thu nang) or (thi nang)) xa hoi. hieu ve chat huu va danh ((ca sau) OR (ca san)) triet".
• Adding a wildcard symbol may retrieve word variants: hoc sach ((thu nang) or (thi nang)) xa hoi. hieu ve chat huu va danh ((ca sau) OR (ca san)) triet*.