Perhaps you should try some spelling variations:
tinh dai » trinh dai, tinh da, tinh hai
phu dan » phu san, phu da, phu can
cho hoc » khoa hoc
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va tinh » may tinh
dan ky » van ky
ho hoc » hoa hoc, hoi hoc, hoc hoc
va cam » va cham, va cac, va cao
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: phu dan ky nang ((ho hoc) or (((cho hoc) OR (co hoc)))). hieu va cam duc va tinh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: phu dan ky nang ((ho hoc) OR (((cho hoc) OR (co hoc)))). hieu va cam duc va tinh dai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "phu dan ky nang ((ho hoc) or (((cho hoc) OR (co hoc)))). hieu va cam duc va tinh dai cua tu".
• Adding a wildcard symbol may retrieve word variants: phu dan ky nang ((ho hoc) or (((cho hoc) OR (co hoc)))). hieu va cam duc va tinh dai cua tu*.