Perhaps you should try some spelling variations:
giai thanh » gia thanh, gian thanh, giay thanh
thuat sach » thuat lanh, thuat san
thuc giai » thuoc giao, hoc giai, thuc thai
thu sach » tu sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
thanh di » thanh doi, thanh de, thanh do
y nang » ky nang, ly nang, v nang
di hoa » dai hoa, doi hoa, do hoa
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)) y nang x hoi. hieu van nam thuc giai thanh di hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) y nang x hoi. hieu van nam thuc giai thanh di hoa viet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) y nang x hoi. hieu van nam thuc giai thanh di hoa viet*.