Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
dat thanh » dao thanh, dat khanh, dang thanh
thuc dat » thuc vat, thuc dan, thuc day
va trien » va truyen, va tuyen, va tieng
va triet » ve triet, cua triet, va viet
nam thuc » nam thuoc, am thuc, nam thu
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
ve nam » he nam, va nam, le nam
thiet » thieu

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 ly nang xa hoi. hieu ve nam thuc dat thanh van ((((va triet) or (va trien))) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang xa hoi. hieu ve nam thuc dat thanh van ((((va triet) OR (va trien))) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: su sach ly nang xa hoi. hieu ve nam thuc dat thanh van ((((va triet) or (va trien))) or (va thiet))*.