Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
anh gian » anh giang, anh giao, manh giang
gian cua » gian xu, ban cua
ty nang » ky nang, ty hang, ly nang
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
lo van » vo van, so van, do van
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve cac ((lo van) or (le van)) anh gian cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve cac ((lo van) OR (le van)) anh gian cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve cac ((lo van) or (le van)) anh gian cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve cac ((lo van) or (le van)) anh gian cua te*.