Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
bach tuoc » sach duoc, sach nuoc
hanh tai » thanh tai, hang tai, han tai
tai cua » thai cua, tai cuc, tri cua
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
sac ky » cac ky
bac tu » ban tu, tac tu, cac tu

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) or (sai ky)) nang xa hoi. hieu va ((bac tu) or (bach tuoc)) va hanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sac ky) OR (sai ky)) nang xa hoi. hieu va ((bac tu) OR (bach tuoc)) va hanh tai cua triet.
• Adding a wildcard symbol may retrieve word variants: su ((sac ky) or (sai ky)) nang xa hoi. hieu va ((bac tu) or (bach tuoc)) va hanh tai cua triet*.