Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
tai lang » tai cong, thi lan, tai san
su triet » su viet, su tien, ve triet
cam thuc » am thuc, nam thuc, cam thu
sach tai » sach bai, sach tham, sach dao
su sach » so sach, vu sach
ca viet » va viet, co viet, san viet
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach tai lang xa hoi. hieu ve cam thuc va hanh lai ((su triet) or (((ca viet) OR (hoa viet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tai lang xa hoi. hieu ve cam thuc va hanh lai ((su triet) OR (((ca viet) OR (hoa viet)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tai lang xa hoi. hieu ve cam thuc va hanh lai ((su triet) or (((ca viet) OR (hoa viet))))".
• Adding a wildcard symbol may retrieve word variants: su sach tai lang xa hoi. hieu ve cam thuc va hanh lai ((su triet) or (((ca viet) OR (hoa viet))))*.