Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van cham » van chat, van tham, va cham
thanh do » thanh de, thanh pho, thanh hoa
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
truc va » thuc vat, trung va
thuc va » thuc vat, thuc dan, thuc day
tu cach » tu cac
y nang » ky nang, ly nang, v nang
do su » do sut, do tu, co su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thuat sach)) y nang x ho. hieu van cham ((truc va) or (thuc va)) thanh do su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuat sach)) y nang x ho. hieu van cham ((truc va) OR (thuc va)) thanh do su triet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thuat sach)) y nang x ho. hieu van cham ((truc va) or (thuc va)) thanh do su triet*.