Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
hang tai » hang va, dung tai
tu sach » thu sach, su sach, tu cach
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
hieu vu » hieu ve, hieu su, dieu vu
tai hai » thi hai, dai hai, tai ha
ly hang » ly quang
te sach » toc sach
soc va » hoc va, loc va, doc 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: ((tu sach) or (te sach)) ly hang tai hai. ((hieu vu) OR (hieu va)) cham soc va hanh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ly hang tai hai. ((hieu vu) OR (hieu va)) cham soc va hanh lai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ly hang tai hai. ((hieu vu) OR (hieu va)) cham soc va hanh lai cua te*".