Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
kmay nang » ky nang, kha nang, may nong
hoc sach » hoc sinh, hoc cac, hoc anh
may nang » may nong, ky nang, cam nang
hieu va » lieu va, hieu qua
cam loc » cam lo
va danh » va dinh, va dan, va hanh
danh du » danh dau, danh tu, dinh du
cua tre » cua te, cuu tre, dua tren
loc va » hoc va, luc va
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ((may nang) or (kmay nang)) xa hoi. hieu va cam loc va danh du ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((may nang) OR (kmay nang)) xa hoi. hieu va cam loc va danh du ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: hoc sach ((may nang) or (kmay nang)) xa hoi. hieu va cam loc va danh du ((cua tre) or (cua triet))*.