Perhaps you should try some spelling variations:
thuat san » thuat toan, thuat song, thuat lanh
thanh van » thanh san, thanh toan, thanh phan
dau tien » van tien
hieu van » hieu va, thien van, lieu va
truc va » thuc va, thuc vat, trung va
van dau » van dao, phan dau
te sach » toc sach
van cam » van nam, van lam, van cau
tuc va » thuc va, tuc xa, duc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thuat san)) ky nang x ho. hieu van cam ((tuc va) or (truc va)) thanh van dau tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuat san)) ky nang x ho. hieu van cam ((tuc va) OR (truc va)) thanh van dau tien.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuat san)) ky nang x ho. hieu van cam ((tuc va) or (truc va)) thanh van dau tien*.