Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu sach » tu sach, thuat sach, thu hoach
tham sac » pham sach, cham soc, pham san
dau tren » dau tien, dat tren, dau tieng
ty nang » ky nang, ty hang, ly nang
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
ba hanh » ban hanh, bao hanh, ba thanh
sac ba » sac bua, cac ba, soc ba
vi dau » vi dai, va dau, bi dau

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) or (thuoc sach)) ((ty nang) or (ty xang)) xa hoi. hieu va tham sac ba hanh vi dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) ((ty nang) OR (ty xang)) xa hoi. hieu va tham sac ba hanh vi dau tren.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuoc sach)) ((ty nang) or (ty xang)) xa hoi. hieu va tham sac ba hanh vi dau tren*.