Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
su triet » su viet, su tien, ve triet
thuc va » thuc vat, thuc dan, thuc day
truc va » thuc vat, trung va
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
sach 2 » sach y
dat su » sat su
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach 2 ((nang xa) or (nang x)) hoi. hieu ve cam ((truc va) or (thuc va)) thanh dat su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach 2 ((nang xa) OR (nang x)) hoi. hieu ve cam ((truc va) OR (thuc va)) thanh dat su triet.
• Adding a wildcard symbol may retrieve word variants: su sach 2 ((nang xa) or (nang x)) hoi. hieu ve cam ((truc va) or (thuc va)) thanh dat su triet*.