Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
nhan luu » nhan luc, nhan lupus, nhan luan
hieu va » lieu va, hieu qua
va nhan » van nhan, ca nhan, va phan
luu van » cuu van, luan van, luu hanh
vi cua » vai cua, di cua
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 sach)) ky nang x hoi. hieu va nhan luu van minh ((vi cua) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) ky nang x hoi. hieu va nhan luu van minh ((vi cua) OR (dai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) ky nang x hoi. hieu va nhan luu van minh ((vi cua) or (dai cua)) triet*.