Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
chat truc » cau truc, chat xuc
thu sach » tu sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
van chat » cao chat
truc va » thuc va, thuc vat, trung va
va hang » van hang, va nang, va lang
dau cua » dai cua, day cua, dan cua
cau cua » cau qua, ca cua, cu cua
y nang » ky nang, ly nang, v nang
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 chat truc va hang ((dau cua) or (cau cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) y nang x hoi. hieu van chat truc va hang ((dau cua) OR (cau cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuat sach)) y nang x hoi. hieu van chat truc va hang ((dau cua) or (cau cua)) tre*".