Perhaps you should try some spelling variations:
thien van » thi van
trinh van » trinh han, trinh quan, trinh toan
va trinh » van trinh, va tinh, lap trinh
nam thuc » nam thuoc, am thuc, nam thu
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
su sac » su sach, su cac
su xac » pu xac, su cac
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) OR (su xac)) ky lang xa hoi. thien van nam thuc va trinh van ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su xac)) ky lang xa hoi. thien van nam thuc va trinh van ((cua tre) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su xac)) ky lang xa hoi. thien van nam thuc va trinh van ((cua tre) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su xac)) ky lang xa hoi. thien van nam thuc va trinh van ((cua tre) or (cua tu))*.