Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
trinh ly » trinh ky, trinh do, trinh tu
thuc dan » thuc hanh, hoc dan, thuc vat
thuc ban » thuoc ban, thu ban, thuc van
hieu ve » hieu va, hieu van
tinh ly » sinh ly, dinh ly, minh ly
tang ma » mang may, tang van
lai cua » dai cua, hai cua, lai chau
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((tinh ly) or (trinh ly)) tang ma hoi. hieu ve cam ((thuc ban) OR (thuc dan)) hanh lai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((tinh ly) OR (trinh ly)) tang ma hoi. hieu ve cam ((thuc ban) OR (thuc dan)) hanh lai cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((tinh ly) or (trinh ly)) tang ma hoi. hieu ve cam ((thuc ban) OR (thuc dan)) hanh lai cua vat*".