Perhaps you should try some spelling variations:
thien van » thi van
trinh van » trinh han, trinh quan, trinh toan
thuc van » thuc dan, thuc va, thuc hanh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky lang xa hoi. thien van nam ((thuc van) OR (thuc vat)) trinh van ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky lang xa hoi. thien van nam ((thuc van) OR (thuc vat)) trinh van ((cua tre) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky lang xa hoi. thien van nam ((thuc van) OR (thuc vat)) trinh van ((cua tre) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: su sac ky lang xa hoi. thien van nam ((thuc van) OR (thuc vat)) trinh van ((cua tre) or (cua tu))*.