Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
van pham » san pham, van phan, van phat
hieu van » hieu va, thien van, lieu va
pham duy » pham duc
va hanh » van hanh, va thanh, va danh
tu lang » cu lang, tu lanh, xu lang
te sach » toc sach
duy va » duy vat, duy van, day va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((tu lang) or (tu lenh)) xa hoi. hieu van pham duy va hanh lai ((cua te) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu lang) OR (tu lenh)) xa hoi. hieu van pham duy va hanh lai ((cua te) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ((tu lang) or (tu lenh)) xa hoi. hieu van pham duy va hanh lai ((cua te) or (su triet))*.