Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
ky dang » ky nang, ky danh
dang ma » dang mau, dang mam, dang mat
loc va » luc va
tu san » thu san, tu can, vu san
tu ban » thu ban, te ban
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu ban)) ky dang ma hoa. hieu va cac ((loc va) or (hoc va)) hanh lai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu ban)) ky dang ma hoa. hieu va cac ((loc va) OR (hoc va)) hanh lai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu ban)) ky dang ma hoa. hieu va cac ((loc va) or (hoc va)) hanh lai cua tu*.