Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cau tren » cu tren, dau tren, ca tren
than cau » toan cau, phan cau, than cap
dan than » dan chan, ban than, van than
cam truc » cau truc, nam truc, lam truoc
thu sach » thuoc sach, thu hoach, khau sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
truc va » thuc va, thuc vat, trung va
tu sach » su sach, te sach, tu cach
ve cam » ve cham, ve cac, va cam
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: ((tu sach) or (((thu sach) or (thuat sach)))) ky nang xa hoi. hieu ve cam truc va dan than cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (((thu sach) OR (thuat sach)))) ky nang xa hoi. hieu ve cam truc va dan than cau tren.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((thu sach) or (thuat sach)))) ky nang xa hoi. hieu ve cam truc va dan than cau tren*.