Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
thu sach » tu sach, thuat sach, thuoc sach
minh cuu » dinh cuu, vinh cuu, minh cau
va triet » va thiet, va trien, ve triet
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
y nang » ky nang, ly nang, v nang
cuu va » cuu van, cuu ve
x hoi » xa hoi, o hoi, x ho

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 (thuat lanh)) y nang x hoi. hieu va cac duc van minh cuu va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat lanh)) y nang x hoi. hieu va cac duc van minh cuu va triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat lanh)) y nang x hoi. hieu va cac duc van minh cuu va triet*.