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
van chat » cao chat
hieu van » hieu va, thien van, lieu va
dan dai » dat dai, can dai, dan dat
truc va » thuc va, thuc vat, trung va
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, v nang, may nang
va dan » ca dan, va dao, va 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 (thuat sach)) ((y nang) OR (ly nang)) xa hoi. hieu van chat truc va dan dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) ((y nang) OR (ly nang)) xa hoi. hieu van chat truc va dan dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuat sach)) ((y nang) OR (ly nang)) xa hoi. hieu van chat truc va dan dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) ((y nang) OR (ly nang)) xa hoi. hieu van chat truc va dan dai cua tre*.